diff --git a/Lora-Map/Model/AlarmItem.cs b/Lora-Map/Model/AlarmItem.cs
index 3be66b1..8160ad0 100644
--- a/Lora-Map/Model/AlarmItem.cs
+++ b/Lora-Map/Model/AlarmItem.cs
@@ -16,12 +16,11 @@ namespace Fraunhofer.Fit.IoT.LoraMap.Model {
     public Double Hdop { get; private set; }
     public Boolean Fix { get; private set; }
     public Double Height { get; private set; }
-    public SortedDictionary<DateTime, String> History { get; private set; }
+    public List<DateTime> ButtonPressed => this.buttonhistory.Keys.ToList();
 
-    public AlarmItem(JsonData json) {
-      this.History = new SortedDictionary<DateTime, String>();
-      this.Update(json);
-    }
+    private readonly SortedDictionary<DateTime, String> buttonhistory = new SortedDictionary<DateTime, String>();
+
+    public AlarmItem(JsonData json) => this.Update(json);
 
     public void Update(JsonData json) {
       this.Rssi = (Double)json["Rssi"];
@@ -52,10 +51,10 @@ namespace Fraunhofer.Fit.IoT.LoraMap.Model {
       key += "_" + ((Double)json["Gps"]["LastLatitude"]).ToString();
       key += "_" + ((Double)json["Gps"]["LastLongitude"]).ToString();
       key += "_" + ((String)json["Gps"]["Time"]);
-      if(!this.History.ContainsValue(key)) {
-        this.History.Add(DateTime.UtcNow, key);
-        if(this.History.Count > 2) {
-          this.History.Remove(this.History.Keys.ToList().First());
+      if(!this.buttonhistory.ContainsValue(key)) {
+        this.buttonhistory.Add(DateTime.UtcNow, key);
+        if(this.buttonhistory.Count > 10) {
+          this.buttonhistory.Remove(this.buttonhistory.Keys.ToList().First());
         }
       }
     }
diff --git a/Lora-Map/Server.cs b/Lora-Map/Server.cs
index 29c4e88..a24cef5 100644
--- a/Lora-Map/Server.cs
+++ b/Lora-Map/Server.cs
@@ -20,6 +20,8 @@ namespace Fraunhofer.Fit.IoT.LoraMap {
     private JsonData marker;
     private readonly Dictionary<String, Marker> markertable = new Dictionary<String, Marker>();
     private readonly AdminModel admin;
+    private readonly Object lockData = new Object();
+    private readonly Object lockPanic = new Object();
 
     public Server(ADataBackend backend, Dictionary<String, String> settings, InIReader requests) : base(backend, settings, requests) {
       this.logger.SetPath(settings["loggingpath"]);
@@ -50,40 +52,46 @@ namespace Fraunhofer.Fit.IoT.LoraMap {
       }
     }
 
-    protected override void Backend_MessageIncomming(Object sender, BackendEvent e) {
+    protected override void Backend_MessageIncomming(Object sender, BackendEvent mqtt) {
       try {
-        JsonData d = JsonMapper.ToObject(e.Message);
-        if(PositionItem.CheckJson(d) && ((String)e.From).Contains("lora/data")) {
+        JsonData d = JsonMapper.ToObject(mqtt.Message);
+        if(PositionItem.CheckJson(d) && ((String)mqtt.From).Contains("lora/data")) {
           String name = PositionItem.GetId(d);
-          if(this.positions.ContainsKey(name)) {
-            this.positions[name].Update(d);
-          } else {
-            this.positions.Add(name, new PositionItem(d, this.marker));
+          lock(this.lockData) {
+            if(this.positions.ContainsKey(name)) {
+              this.positions[name].Update(d);
+            } else {
+              this.positions.Add(name, new PositionItem(d, this.marker));
+            }
           }
           Console.WriteLine("Koordinate erhalten!");
-        } else if(AlarmItem.CheckJson(d) && ((String)e.From).Contains("lora/panic")) {
+        } else if(AlarmItem.CheckJson(d) && ((String)mqtt.From).Contains("lora/panic")) {
           String name = AlarmItem.GetId(d);
-          if(this.alarms.ContainsKey(name)) {
-            this.alarms[name].Update(d);
-          } else {
-            this.alarms.Add(name, new AlarmItem(d));
+          lock(this.lockPanic) {
+            if(this.alarms.ContainsKey(name)) {
+              this.alarms[name].Update(d);
+            } else {
+              this.alarms.Add(name, new AlarmItem(d));
+            }
           }
-          if(this.positions.ContainsKey(name)) {
-            this.positions[name].Update(d);
-          } else {
-            this.positions.Add(name, new PositionItem(d, this.marker));
+          lock(this.lockData) {
+            if(this.positions.ContainsKey(name)) {
+              this.positions[name].Update(d);
+            } else {
+              this.positions.Add(name, new PositionItem(d, this.marker));
+            }
           }
           Console.WriteLine("PANIC erhalten!");
-        } else if(Camera.CheckJson(d) && ((String)e.From).Contains("camera/count")) {
+        } else if(Camera.CheckJson(d) && ((String)mqtt.From).Contains("camera/count")) {
           String cameraid = Camera.GetId(d);
           if(this.cameras.ContainsKey(cameraid)) {
             this.cameras[cameraid].Update(d);
           } else {
             this.cameras.Add(cameraid, new Camera(d));
           }
-        } else if((((String)e.From).Contains("sfn/crowd_density_local") && Crowd.CheckJsonCrowdDensityLocal(d)) || 
-          (((String)e.From).Contains("sfn/fighting_detection") && Crowd.CheckJsonFightingDetection(d)) || 
-          (((String)e.From).Contains("sfn/flow") && Crowd.CheckJsonFlow(d))) {
+        } else if((((String)mqtt.From).Contains("sfn/crowd_density_local") && Crowd.CheckJsonCrowdDensityLocal(d)) || 
+          (((String)mqtt.From).Contains("sfn/fighting_detection") && Crowd.CheckJsonFightingDetection(d)) || 
+          (((String)mqtt.From).Contains("sfn/flow") && Crowd.CheckJsonFlow(d))) {
           String cameraid = Crowd.GetId(d);
           if(this.crowds.ContainsKey(cameraid)) {
             this.crowds[cameraid].Update(d);
@@ -91,8 +99,8 @@ namespace Fraunhofer.Fit.IoT.LoraMap {
             this.crowds.Add(cameraid, new Crowd(d));
           }
         }
-      } catch(Exception ex) {
-        Helper.WriteError(ex.Message);
+      } catch(Exception e) {
+        Helper.WriteError("Backend_MessageIncomming(): "+e.Message + "\n\n" + e.StackTrace);
       }
     }
 
@@ -133,7 +141,7 @@ namespace Fraunhofer.Fit.IoT.LoraMap {
           return SendJsonResponse(this.crowds, cont);
         }
       } catch(Exception e) {
-        Helper.WriteError("500 - " + e.Message);
+        Helper.WriteError("SendWebserverResponse(): 500 - " + e.Message + "\n\n" + e.StackTrace);
         cont.Response.StatusCode = 500;
         return false;
       }
diff --git a/Lora-Map/resources/css/global.css b/Lora-Map/resources/css/global.css
index a6c775d..889abbb 100644
--- a/Lora-Map/resources/css/global.css
+++ b/Lora-Map/resources/css/global.css
@@ -143,6 +143,12 @@ object {
 #pannels #pannels_info .update {
   margin-bottom: 10px;
 }
+#pannels #pannels_info .alerts {
+  margin-top: 10px;
+}
+#pannels #pannels_info .alerts .panicitem {
+  display: block;
+}
 
 #pannels #pannels_version {
   padding: 5px;
diff --git a/Lora-Map/resources/js/map.js b/Lora-Map/resources/js/map.js
index d3bcf38..747797c 100644
--- a/Lora-Map/resources/js/map.js
+++ b/Lora-Map/resources/js/map.js
@@ -68,7 +68,7 @@ function GetGeoLayer() {
             };
           },
           onEachFeature: function (feature, layer) {
-            if (feature.geometry.type === "Polygon" || (feature.geometry.type === "Point" && feature.properties.hasOwnProperty("icon"))) {
+            if (feature.geometry.type === "Polygon" || feature.geometry.type === "Point" && feature.properties.hasOwnProperty("icon")) {
               var text = "<b>"+feature.properties.name+"</b>";
               if (feature.properties.hasOwnProperty("description")) {
                 text = text + "<br>" + feature.properties.description;
@@ -121,7 +121,7 @@ mymap.on('zoomend', function () {
         elem._icon.style.fontSize = "0px";
       }
     });
-  } else if (currentZoom == 14) {
+  } else if (currentZoom === 14) {
     SpecialMarkers.forEach(function (elem, index) {
       if (elem.feature.properties["description"] === "snumber") {
         elem._icon.style.fontSize = "0px";
@@ -132,7 +132,7 @@ mymap.on('zoomend', function () {
         elem._icon.style.fontSize = "6px";
       }
     });
-  } else if (currentZoom == 15) {
+  } else if (currentZoom === 15) {
     SpecialMarkers.forEach(function (elem, index) {
       if (elem.feature.properties["description"] === "snumber") {
         elem._icon.style.fontSize = "0px";
@@ -143,7 +143,7 @@ mymap.on('zoomend', function () {
         elem._icon.style.fontSize = "9px";
       }
     });
-  } else if (currentZoom == 16) {
+  } else if (currentZoom === 16) {
     SpecialMarkers.forEach(function (elem, index) {
       if (elem.feature.properties["description"] === "snumber") {
         elem._icon.style.fontSize = "5px";
@@ -154,7 +154,7 @@ mymap.on('zoomend', function () {
         elem._icon.style.fontSize = "13px";
       }
     });
-  } else if (currentZoom == 17) {
+  } else if (currentZoom === 17) {
     SpecialMarkers.forEach(function (elem, index) {
       if (elem.feature.properties["description"] === "snumber") {
         elem._icon.style.fontSize = "5px";
@@ -165,7 +165,7 @@ mymap.on('zoomend', function () {
         elem._icon.style.fontSize = "16px";
       }
     });
-  } else if (currentZoom == 18) {
+  } else if (currentZoom === 18) {
     SpecialMarkers.forEach(function (elem, index) {
       if (elem.feature.properties["description"] === "snumber") {
         elem._icon.style.fontSize = "8px";
@@ -176,7 +176,7 @@ mymap.on('zoomend', function () {
         elem._icon.style.fontSize = "25px";
       }
     });
-  } else if (currentZoom == 19) {
+  } else if (currentZoom === 19) {
     SpecialMarkers.forEach(function (elem, index) {
       if (elem.feature.properties["description"] === "snumber") {
         elem._icon.style.fontSize = "14px";
diff --git a/Lora-Map/resources/js/marker.js b/Lora-Map/resources/js/marker.js
index 88f78bf..dea8915 100644
--- a/Lora-Map/resources/js/marker.js
+++ b/Lora-Map/resources/js/marker.js
@@ -62,11 +62,11 @@ function parseAjaxLoc() {
           if (lasttime <= 5 * 60) {
             markers[key]._icon.style.opacity = 1;
           } else if (lasttime > 5 * 60 && lasttime <= 15 * 60) {
-            markers[key]._icon.style.opacity = 0.9 - (((lasttime - (5 * 60)) / ((15 * 60) - (5 * 60))) * (0.9 - 0.7));
+            markers[key]._icon.style.opacity = 0.9 - (lasttime - 5 * 60) / (15 * 60 - 5 * 60) * (0.9 - 0.7);
           } else if (lasttime > 15 * 60 && lasttime <= 30 * 60) {
-            markers[key]._icon.style.opacity = 0.7 - (((lasttime - (15 * 60)) / ((30 * 60) - (15 * 60))) * (0.7 - 0.5));
+            markers[key]._icon.style.opacity = 0.7 - (lasttime - 15 * 60) / (30 * 60 - 15 * 60) * (0.7 - 0.5);
           } else if (lasttime > 30 * 60 && lasttime <= 60 * 60) {
-            markers[key]._icon.style.opacity = 0.5 - (((lasttime - (30 * 60)) / ((30 * 60) - (30 * 60))) * (0.5 - 0.25));
+            markers[key]._icon.style.opacity = 0.5 - (lasttime - 30 * 60) / (30 * 60 - 30 * 60) * (0.5 - 0.25);
           } else if (lasttime > 60 * 60) {
             markers[key]._icon.style.opacity = 0.25;
           }
@@ -78,12 +78,13 @@ function parseAjaxLoc() {
   }
 }
 
+var serverPanic = {};
 function parseAjaxPanic() {
   if (this.readyState === 4 && this.status === 200) {
-    var panics = JSON.parse(this.responseText);
-    for (var id in panics) {
-      if (panics.hasOwnProperty(id)) {
-        var alertItem = panics[id];
+    serverPanic = JSON.parse(this.responseText);
+    for (var id in serverPanic) {
+      if (serverPanic.hasOwnProperty(id)) {
+        var alertItem = serverPanic[id];
         if (markers.hasOwnProperty(id)) {
           var marker = markers[id];
           if (timeCalculation(alertItem["Recievedtime"], "diffraw") <= 10 && marker._icon.className.indexOf(" marker-alert") === -1) {
diff --git a/Lora-Map/resources/js/menu.js b/Lora-Map/resources/js/menu.js
index da0e89d..871124d 100644
--- a/Lora-Map/resources/js/menu.js
+++ b/Lora-Map/resources/js/menu.js
@@ -57,6 +57,16 @@ function update_pannels_info() {
     html += "<div class=\"lastgps\"><span class=\"bold\">Letzter Wert:</span> Vor: " + timeCalculation(positionItem["Lastgpspostime"], "difftext") + "</div>";
     html += "<div class=\"update\"><span class=\"bold\">Update:</span> " + timeCalculation(positionItem["Recievedtime"], "str") + "<br><span class=\"bold\">Vor:</span> " + timeCalculation(positionItem["Recievedtime"], "difftext") + "</div>";
     html += "<div><span class=\"bold\">RSSI:</span> " + positionItem["Rssi"] + ", <span class=\"bold\">SNR:</span> " + positionItem["Snr"] + "</div>";
+    if (serverPanic.hasOwnProperty(statusToDevice)) {
+      var panicData = serverPanic[statusToDevice];
+      if (panicData["ButtonPressed"].length > 0) {
+        html += "<div class='alerts'><span class=\"bold\">Alerts:</span>";
+        for (var i = 0; i < panicData["ButtonPressed"].length; i++) {
+          html += "<span class='panicitem'>" + timeCalculation(panicData["ButtonPressed"][i], "str")+" (vor " + timeCalculation(panicData["ButtonPressed"][i],"difftext")+")</span>";
+        }
+        html += "</div>";
+      }
+    }
     document.getElementById("pannels_info").innerHTML = html;
   }
 }