diff --git a/src/renderer/components/EditBar.vue b/src/renderer/components/EditBar.vue
index 908f50f..074ccbe 100644
--- a/src/renderer/components/EditBar.vue
+++ b/src/renderer/components/EditBar.vue
@@ -139,6 +139,7 @@ You should have received a copy of the GNU General Public License along with FG
       saveDefered () {
         this.$parent.$parent.$refs.editLayer.save()
         this.$parent.$parent.$refs.towerLayer.save()
+        this.$parent.$parent.$refs.thresholdLayer.save()
         this.$parent.$parent.$refs.editLayer.disableEdit()
         this.scanGroundnets()
         Vue.set(this, 'saveDialogVisible', false)              
diff --git a/src/renderer/components/LeafletSidebar.vue b/src/renderer/components/LeafletSidebar.vue
index f225dbc..c9cf7ed 100644
--- a/src/renderer/components/LeafletSidebar.vue
+++ b/src/renderer/components/LeafletSidebar.vue
@@ -40,6 +40,7 @@ You should have received a copy of the GNU General Public License along with FG
           <ParkingEdit></ParkingEdit>
           <ArcEditMulti></ArcEditMulti>
           <ArcEdit></ArcEdit>
+          <ThresholdEdit></ThresholdEdit>
           <TowerEdit></TowerEdit>          
           <NodeEdit></NodeEdit>          
           <ParkingGroupEdit ref="parkingGroupEdit"  @editParking="(msg) => $emit('editParking', msg)"></ParkingGroupEdit>
@@ -82,6 +83,7 @@ You should have received a copy of the GNU General Public License along with FG
   import FileSelect from './FileSelect'
   import Help from './Help'
   import NodeEdit from './NodeEdit'
+  import ThresholdEdit from './ThresholdEdit'
   import ParkingEdit from './ParkingEdit'
   import ParkingGroupEdit from './ParkingGroupEdit'
   // import ParkingList from './ParkingList'
@@ -93,7 +95,7 @@ You should have received a copy of the GNU General Public License along with FG
 
   export default {
     name: 'leaflet-sidebar',
-    components: { Help, AirportEdit, ArcEdit, ArcEditMulti, CheckPanel, NodeEdit, ParkingEdit, ParkingGroupEdit, RunScan, TowerEdit, FileSelect, SettingsPanel, Search, Upload, WorkInProgress },
+    components: { Help, AirportEdit, ArcEdit, ArcEditMulti, CheckPanel, NodeEdit, ParkingEdit, ParkingGroupEdit, RunScan, TowerEdit, ThresholdEdit, FileSelect, SettingsPanel, Search, Upload, WorkInProgress },
     props: [],
     created () {
       window.addEventListener('keydown', this.doCommand)
diff --git a/src/renderer/components/ThresholdEdit.vue b/src/renderer/components/ThresholdEdit.vue
new file mode 100644
index 0000000..7b2710c
--- /dev/null
+++ b/src/renderer/components/ThresholdEdit.vue
@@ -0,0 +1,95 @@
+<!--
+Copyright 2020 Keith Paterson
+
+This file is part of FG Airports.
+
+FG Airports is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+FG Airports is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with FG Airports. If not, see http://www.gnu.org/licenses/.
+-->
+
+<template>
+  <div width="100%" v-if="threshold">
+    <div>
+      <el-row>
+        <el-col :span="7">
+          <span class="label">Runway :</span>
+        </el-col>
+        <el-col :span="17">
+          <el-input
+            placeholder="Please input"
+            v-model="runway"
+            :disabled="true"
+          ></el-input>
+        </el-col>
+      </el-row>
+      <el-row>
+        <el-col :span="7">
+          <span class="label">Displacement :</span>
+        </el-col>
+        <el-col :span="17">
+          <el-input-number
+            v-model="displacement"
+            :disabled="!editing"
+          ></el-input-number>
+        </el-col>
+      </el-row>
+    </div>
+  </div>
+</template>
+
+
+<script lang="js">
+/* eslint-disable */
+  const Coordinates = require('coordinate-parser');
+  import {writeTowerXML} from '../loaders/tower_writer'
+
+
+  export default {
+    /*
+    methods: {
+      updateIsOnRunway (value) {
+        this.$store.commit('SET_EDIT_ISONRUNWAY', value)
+      }
+    },
+    */
+    data () {
+      return {
+        coordFocussed: false
+      }
+    },
+    methods: {
+      save () {
+        var o = {latitude: this.latitude, longitude: this.longitude, height: this.height};
+        writeTowerXML(this.$store.state.Settings.settings.airportsDirectory, this.$parent.$parent.$parent.icao, o)
+      }
+    },
+    computed: {
+      editing: {
+        get: function () {
+          return this.$parent.$parent.$parent.$refs.editLayer.editing 
+        }
+      },
+      threshold: function () {
+        return this.$store.state.Editable.type === 'threshold'
+      },
+      //<rwy>07L</rwy>
+      //<hdg-deg>68.77</hdg-deg>
+      //<displ-m>0.0</displ-m>
+      //<stopw-m>160.0</stopw-m>
+      runway: function () {
+        return this.$store.state.Editable.data.threshold.runway;
+      },
+      displacement: {
+        set: function (newValue) {
+          this.$store.dispatch('setDisplacement', newValue);
+        },
+        get: function () {
+        return this.$store.state.Editable.data.threshold.displacement;
+      }
+      }
+    }
+  }
+</script>
diff --git a/src/renderer/components/ThresholdLayer.vue b/src/renderer/components/ThresholdLayer.vue
index fff9563..dfabab7 100644
--- a/src/renderer/components/ThresholdLayer.vue
+++ b/src/renderer/components/ThresholdLayer.vue
@@ -5,6 +5,7 @@
   import L from 'leaflet'
   import LEdit from 'leaflet-editable/src/Leaflet.Editable.js'
   import {readThresholdXML} from '../loaders/threshold_loader'
+  import {writeThresholdXML} from '../loaders/threshold_writer'
 
   export default {
     name: 'edit-layer',
@@ -12,10 +13,17 @@
     created () {
     },
     mounted () {
-      console.log(LMap)
-      console.log(LMarker)
-      console.log(L)
-      console.log(LEdit)
+      console.debug(LMap, LMarker, L, LEdit)
+      this.$store.watch(
+        function (state) {
+          return state.Editable.data.threshold
+        },
+        () => { this.editedThreshold() }
+        ,
+        {
+          deep: true
+        }
+      )
     },
     beforeDestroy () {
       this.remove()
@@ -25,6 +33,17 @@
       }
     },
     methods: {
+      editedThreshold () {
+        var rwy = this.$store.state.Editable.data.threshold.runway
+        var displacement = this.$store.state.Editable.data.threshold.displacement
+        this.layerGroup.eachLayer(l => {
+          if (l instanceof L.Threshold) {
+            if (l.rwy === rwy) {
+              l.setDisplacement(displacement)
+            }
+          }
+        })
+      },
       getLayer () {
         return this.layerGroup
       },
@@ -65,6 +84,25 @@
           }
         }
       },
+      save () {
+        if (this.layerGroup) {
+          var list = {}
+
+          this.layerGroup.eachLayer(l => {
+            if (l instanceof L.Threshold) {
+              var latitude = l.originLatLng[0].toFixed(6)
+              var longitude = l.originLatLng[1].toFixed(6)
+
+              if (list[l.index] === undefined) {
+                list[l.index] = []
+              }
+              var o = {latitude: latitude, longitude: longitude, index: l.index, rwy: l.rwy, heading: l.heading, displacement: l.displacement, stopw_m: l.stopw_m}
+              list[l.index].push(o)
+            }
+          })
+          writeThresholdXML(this.$store.state.Settings.settings.airportsDirectory, this.icao, list)
+        }
+      },
       zoomUpdated () {
         if (this.layerGroup) {
           this.layerGroup.eachLayer(l => {
diff --git a/src/renderer/components/TowerLayer.vue b/src/renderer/components/TowerLayer.vue
index 0b0a8b6..72949b9 100644
--- a/src/renderer/components/TowerLayer.vue
+++ b/src/renderer/components/TowerLayer.vue
@@ -73,16 +73,18 @@ You should have received a copy of the GNU General Public License along with FG
         }
       },
       save () {
-        this.layerGroup.eachLayer(l => {
-          if (l instanceof L.TowerMarker) {
-            var latitude = l.getLatLng().lat.toFixed(6)
-            var longitude = l.getLatLng().lng.toFixed(6)
-            var height = l.elev_m
+        if (this.layerGroup) {
+          this.layerGroup.eachLayer(l => {
+            if (l instanceof L.TowerMarker) {
+              var latitude = l.getLatLng().lat.toFixed(6)
+              var longitude = l.getLatLng().lng.toFixed(6)
+              var height = l.elev_m
 
-            var o = {latitude: latitude, longitude: longitude, height: height}
-            writeTowerXML(this.$store.state.Settings.settings.airportsDirectory, l.icao, o)
-          }
-        })
+              var o = {latitude: latitude, longitude: longitude, height: height}
+              writeTowerXML(this.$store.state.Settings.settings.airportsDirectory, l.icao, o)
+            }
+          })
+        }
       },
       setVisible (visible) {
         if (this.layerGroup !== undefined) {
diff --git a/src/renderer/components/Upload.vue b/src/renderer/components/Upload.vue
index c3cfb7c..f1113fc 100644
--- a/src/renderer/components/Upload.vue
+++ b/src/renderer/components/Upload.vue
@@ -1,3 +1,15 @@
+<!--
+Copyright 2020 Keith Paterson
+
+This file is part of FG Airports.
+
+FG Airports is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+FG Airports is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with FG Airports. If not, see http://www.gnu.org/licenses/.
+-->
+
 <template>
     <el-dialog :title.sync="title" :visible.sync="visible" width="30%" center>
       <span v-if="max>0">
@@ -10,6 +22,7 @@
       
       <el-button @click="handleOkClicked('twr')" :disabled="!tower_comittable" >Upload Tower</el-button>
       <el-button @click="handleOkClicked('groundnet')" :disabled="!groundnet_comittable" >Upload Groundnet</el-button>
+      <el-button @click="handleOkClicked('threshold')" :disabled="!threshold_comittable" >Upload Threshold</el-button>
 
       <span slot="footer" class="dialog-footer">
         <el-button @click="closeClicked">{{buttonText}}</el-button>
@@ -321,6 +334,14 @@
         this.icao + '.groundnet.new.xml');
         return fs.existsSync(f) && this.$store.state.Check.results.filter(a => a.id>=0).length === 0 && this.gplv2 && this.max === 0 && this.azure && !this.uploading
       },
+      threshold_comittable: function () {
+        var f = path.join(this.$store.state.Settings.settings.airportsDirectory, 
+        this.icao[0], 
+        this.icao[1], 
+        this.icao[2], 
+        this.icao + '.threshold.new.xml');
+        return fs.existsSync(f) && this.gplv2 && this.max === 0 && this.azure && !this.uploading
+      },
       comittable: function () {
         return this.$store.state.Check.results.filter(a => a.id>=0).length === 0 && this.gplv2 && this.max === 0 && this.azure && !this.uploading
       },
diff --git a/src/renderer/loaders/Threshold.js b/src/renderer/loaders/Threshold.js
index 953241e..8299107 100644
--- a/src/renderer/loaders/Threshold.js
+++ b/src/renderer/loaders/Threshold.js
@@ -14,14 +14,19 @@ You should have received a copy of the GNU General Public License along with FG
 const convert = require('geo-coordinates-parser');
 const fs = require('fs');
 const path = require('path');
+const store = require('../store');
+const turf = require('@turf/turf');
+
 
 /**http://wiki.openstreetmap.org/wiki/Zoom_levels*/
 
 
 L.Threshold = L.Marker.extend({
-    options: {
-        zIndexOffset: 20000, 
-    },
+    heading: 0,
+    displacement: 0,
+    stopw_m: 0,
+    originLatLng: null,
+    rwy: '',
     stripSVG: function(fName) {
         var rx = /<\s*svg[^>]*>([\s\S]*)<\s*\/svg[^>]*>/gm;
         var svg = fs.readFileSync(path.join(__static, '/', fName), 'utf8');
@@ -41,11 +46,10 @@ L.Threshold = L.Marker.extend({
                 this.setIcon(L.divIcon({
                     iconSize: 64,
                     className: 'threshold-marker-icon',
-                    html: `<div style=\'transform: translateX(${offset}px) translateY(${offset}px) scale(${scale}) rotate(${this.options.heading}deg); border: 1px red\'>${this.svg}</div>`,
+                    html: `<div style=\'transform: translateX(${offset}px) translateY(${offset}px) scale(${scale}) rotate(${this.heading}deg); border: 1px red\'>${this.svg}</div>`,
                 }));    
 
                 this.update(this.getLatLng());
-                console.debug();
                 this.setLatLng(this.getLatLng());
                 this._metersPP = metersPP;
             }
@@ -60,21 +64,86 @@ L.Threshold = L.Marker.extend({
     pixelValue: function (latitude, meters, zoomLevel) {
         return meters / metersPerPixel(latitude, zoomLevel);
     },
-        
+    setOrigin (originLatLng) {
+        this.originLatLng = originLatLng;
+    },
+    setHeading (heading) {
+        this.heading = Number(heading);
+    },
+    setRunway (rwy) {
+        this.rwy = Number(rwy);
+    },
+    setStopW (stopw_m) {
+        this.stopw_m = stopw_m;
+    },
+    setDisplacement(displacement) {
+      const turfOptions = { units: 'kilometers' };
+      this.displacement = Number(displacement);
 
+      var newPos = turf.destination([this.originLatLng[1], this.originLatLng[0]], displacement/1000, this.normalizeAngle(this.heading), turfOptions);
+      var newValue = {lat: newPos.geometry.coordinates[1].toFixed(6), 
+                      lng: newPos.geometry.coordinates[0].toFixed(6) };
+      console.debug(`Threshold Old : ${this.originLatLng} -> ${this.turfToLatLng(newPos)}`); 
+      this.setLatLng(newValue);
+    },
+    normalizeAngle( angle ) {
+        if(angle >= 180) {
+            return angle - 360;
+        }
+        if(angle <= -180) {
+          return angle + 360;
+        }
+        return angle;
+    },
+    latToTurf (turfPoint) {
+        return [turfPoint.lng, turfPoint.lat];
+    },
+    latLngToTurf (turfPoint) {
+        return [turfPoint.decimalLongitude, turfPoint.decimalLatitude];
+    },
+    turfToLatLng: function (turfPoint) {
+        return '' + turfPoint.geometry.coordinates[1].toFixed(6) + ',' + turfPoint.geometry.coordinates[0].toFixed(6);
+    }
 });
 
 L.Threshold.addInitHook(function(){
     this.svg = this.stripSVG('FGA_THR.svg');
     this.iconSize = 500;
+
+    this.on('click', function (event) { 
+        console.debug("Click Threshold : ", event);
+        store.default.dispatch('setThreshold', {rwy: event.target.rwy, displacement: event.target.displacement});
+    });
+    this.on('add', function (event) {         
+        // event.target.direction.addTo(event.target._map);
+    });
 });
 
-//Builds a marker for a ai or multiplayer aircraft
+//Builds a marker for a threshold 
+/*              
+<threshold>
+  <lon>13.517142</lon>
+  <lat>52.380125</lat>
+  <rwy>07L</rwy>
+  <hdg-deg>68.77</hdg-deg>
+  <displ-m>0.0</displ-m>
+  <stopw-m>160.0</stopw-m>
+</threshold>
+*/
 var threshold = function (n, options) {
     var latlon = convert(n.find('lat/text()').text() + " " + n.find('lon/text()').text());
+    var rwy = n.find('rwy/text()').text();
     var heading = n.find('hdg-deg/text()').text();
+    var displ_m = n.find('displ-m/text()').text();
+    var stopw_m = n.find('stopw-m/text()').text();
 
-    var marker = new L.Threshold([latlon.decimalLatitude, latlon.decimalLongitude], {heading: heading, pane: 'threshold-pane'});
+    var marker = new L.Threshold([latlon.decimalLatitude, latlon.decimalLongitude], 
+        {pane: 'threshold-pane'});
+    marker.setOrigin([latlon.decimalLatitude, latlon.decimalLongitude]);
+    marker.setHeading(heading);    
+    marker.setDisplacement(displ_m);    
+    marker.setRunway(rwy);
+    marker.setStopW(stopw_m);
     return marker;
 }
 
diff --git a/src/renderer/loaders/threshold_loader.js b/src/renderer/loaders/threshold_loader.js
index 31ae532..491c284 100644
--- a/src/renderer/loaders/threshold_loader.js
+++ b/src/renderer/loaders/threshold_loader.js
@@ -40,26 +40,21 @@ exports.readThresholdXML = function (fDir, icao, force) {
                 throw err;
             }
 
-            var thresholdNodes = xml.find('PropertyList/runway/threshold');
-            console.log("Threshold Nodes" + thresholdNodes.length);
+            var runwayNodes = xml.find('PropertyList/runway');
+            console.log("Threshold Nodes" + runwayNodes.length);
 
-            var merged = new Array();
-
-            var nodesLookup = {};
             featureLookup = [];
 
-
-            thresholdNodes.map(n => {
-               var icon = threshold(n);
-               icon.addTo(layerGroup);
-
-                var latlon = convert(n.find('lat/text()').text() + " " + n.find('lon/text()').text());
-                /*
-                var marker = new L.Circle([latlon.decimalLatitude, latlon.decimalLongitude], 5);
-                marker.addTo(layerGroup);
-                */
-
-//                features.push(circle);
+            var index = 0;
+            runwayNodes.map(r => {
+                var thresholds = r.find('threshold');
+                thresholds.map(t => {
+                    var icon = threshold(t);
+                    icon.index = index;
+                    icon.addTo(layerGroup);
+                }                
+                )
+                index+=1;
             }).sort();
 
             return layerGroup;
diff --git a/src/renderer/loaders/threshold_writer.js b/src/renderer/loaders/threshold_writer.js
new file mode 100644
index 0000000..0f6a39f
--- /dev/null
+++ b/src/renderer/loaders/threshold_writer.js
@@ -0,0 +1,120 @@
+/*
+Copyright 2021 Keith Paterson
+
+This file is part of FG Airports.
+
+FG Airports is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+FG Airports is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with FG Airports. If not, see http://www.gnu.org/licenses/.
+*/
+
+/* eslint-disable */
+const fs = require('fs');
+const path = require('path');
+
+const store = require('../store');
+
+const util = require('util');
+
+const mathjs = require('mathjs');
+
+var builder = require('xmlbuilder');
+
+
+
+var writeThresholdXML = function (fDir, icao, coordinates) {
+    try {
+        try { fs.mkdirSync(path.join(fDir), { recursive: true })} catch (err) { }
+        try { fs.mkdirSync(path.join(fDir, icao[0]),{ recursive: true })} catch (err) { }
+        try { fs.mkdirSync(path.join(fDir, icao[0], icao[1]), { recursive: true })} catch (err) { }
+        try { fs.mkdirSync(path.join(fDir, icao[0], icao[1], icao[2]), { recursive: true })} catch (err) { }
+
+        var f = path.join(fDir, icao[0], icao[1], icao[2], icao + '.threshold.new.xml');
+        var fBak = path.join(fDir, icao[0], icao[1], icao[2], icao + '.threshold.bak.xml');
+
+        if( fs.existsSync(f) ) {
+            fs.copyFileSync(f, fBak);
+        }
+        if (f == null)
+            return;
+        var xmlObj = { PropertyList: { runway: map(coordinates) } };
+
+        xmlString = builder.create(xmlObj).end({ pretty: true });
+        fs.writeFileSync(f, xmlString);
+        console.debug(xmlString);
+    } catch (error) {
+        console.error(error);
+    }
+    return;
+}
+
+var map = function (o) {
+    console.debug(o);
+    
+    /**
+        <?xml version='1.0' encoding='ISO-8859-1'?>
+        <PropertyList>
+        <runway>
+            <threshold>
+                <lon>13.485025</lon>
+                <lat>52.367689</lat>
+                <rwy>07</rwy>
+                <hdg-deg>68.75</hdg-deg>
+                <displ-m>0.0</displ-m>
+                <stopw-m>300.0</stopw-m>
+            </threshold>
+            <threshold>
+                <lon>13.526097</lon>
+                <lat>52.377431</lat>
+                <rwy>25</rwy>
+                <hdg-deg>248.78</hdg-deg>
+                <displ-m>0.0</displ-m>
+                <stopw-m>300.0</stopw-m>
+            </threshold>
+        </runway>
+        <runway>
+            <threshold>
+                <lon>13.517142</lon>
+                <lat>52.380125</lat>
+                <rwy>07L</rwy>
+                <hdg-deg>68.77</hdg-deg>
+                <displ-m>0.0</displ-m>
+                <stopw-m>160.0</stopw-m>
+            </threshold>
+            <threshold>
+                <lon>13.554253</lon>
+                <lat>52.388919</lat>
+                <rwy>25R</rwy>
+                <hdg-deg>248.80</hdg-deg>
+                <displ-m>0.0</displ-m>
+                <stopw-m>300.0</stopw-m>
+            </threshold>
+        </runway>
+        </PropertyList>
+     */
+    var ret = [];
+    Object.keys(o).forEach(key => {         
+        ret.push({ threshold: mapThreshold(o[key])});
+    });
+    return ret;
+}
+
+/**
+ * <latitude>58.106924</latitude>
+      <longitude>6.610419</longitude>
+      <index>0</index>
+      <rwy>14</rwy>
+      <heading>131.16</heading>
+      <displacement>273</displacement>
+      <stopw_m>0.0</stopw_m>
+
+ * @param {*} t 
+ */
+
+var mapThreshold = function (t) {
+    return t.map( t => {return {lon: t.longitude, lat: t.latitude, rwy: t.rwy, 'hdg-deg': t.heading, 'displ-m': t.displacement, 'stopw-m': t.stopw_m}});
+}
+
+export { writeThresholdXML };
\ No newline at end of file
diff --git a/src/renderer/loaders/tower_writer.js b/src/renderer/loaders/tower_writer.js
index 14bff2b..903adf4 100644
--- a/src/renderer/loaders/tower_writer.js
+++ b/src/renderer/loaders/tower_writer.js
@@ -1,3 +1,14 @@
+/*
+Copyright 2021 Keith Paterson
+
+This file is part of FG Airports.
+
+FG Airports is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+FG Airports is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with FG Airports. If not, see http://www.gnu.org/licenses/.
+*/
 /* eslint-disable */
 const fs = require('fs');
 const path = require('path');
diff --git a/src/renderer/store/modules/Editable.js b/src/renderer/store/modules/Editable.js
index 947863d..e1aaead 100644
--- a/src/renderer/store/modules/Editable.js
+++ b/src/renderer/store/modules/Editable.js
@@ -16,7 +16,7 @@ const state = {
   type: 'none',
   index: 'none',
   editing: false,
-  data: {airports: {}, parking: {}, arc: {}, multiarc: {}, node: {}, runway: {}}
+  data: {airports: {}, parking: {}, arc: {}, multiarc: {}, node: {}, runway: {}, threshold: {}}
 }
 
 const SET_EDIT_AIRPORT = 'SET_EDIT_AIRPORT'
@@ -165,6 +165,14 @@ const mutations = {
     Vue.set(state.data.tower.coords, 'longitude', coords.split(' ')[1])
     Vue.set(state.data.tower.coords, 'height', coords.split(' ')[2])
   },
+  'SET_EDIT_THRESHOLD_COORDS' (state, threshold) {
+    state.type = 'threshold'
+    Vue.set(state.data.threshold, 'runway', threshold.rwy)
+    Vue.set(state.data.threshold, 'displacement', threshold.displacement)
+  },
+  'SET_EDIT_THRESHOLD_DISPLACEMENT' (state, displacement) {
+    Vue.set(state.data.threshold, 'displacement', displacement)
+  },
   'SET_EDIT_ISONRUNWAY' (state, isOnRunway) {
     Vue.set(state.data.node, 'isOnRunway', isOnRunway)
   }
@@ -204,6 +212,12 @@ const actions = {
   },
   async setTowerCoords (context, node) {
     context.commit('SET_EDIT_TOWER_COORDS', node)
+  },
+  async setThreshold (context, node) {
+    context.commit('SET_EDIT_THRESHOLD_COORDS', node)
+  },
+  async setDisplacement (context, displacement) {
+    context.commit('SET_EDIT_THRESHOLD_DISPLACEMENT', displacement)
   }
 }