diff --git a/EDPlayerJournal/BGS/CombatZone.cs b/EDPlayerJournal/BGS/CombatZone.cs
index ee37f12..a7a8229 100644
--- a/EDPlayerJournal/BGS/CombatZone.cs
+++ b/EDPlayerJournal/BGS/CombatZone.cs
@@ -66,7 +66,7 @@ public class CombatZone : Transaction {
     /// Returns true if it is a thargoid combat zone
     /// </summary>
     public bool IsThargoid {
-        get { return string.Compare(Type, CombatZones.ThargoidCombatZone) == 0; }
+        get { return string.Compare(Type, CombatZones.AXCombatZone) == 0; }
     }
 
     public override int CompareTo(Transaction? obj) {
diff --git a/EDPlayerJournal/BGS/TransactionParser.cs b/EDPlayerJournal/BGS/TransactionParser.cs
index 022c5bb..0177481 100644
--- a/EDPlayerJournal/BGS/TransactionParser.cs
+++ b/EDPlayerJournal/BGS/TransactionParser.cs
@@ -112,7 +112,7 @@ internal class TransactionParserContext {
             cztype = CombatZones.ShipCombatZone;
         } else if (ThargoidScoutKills > 0 && ThargoidInterceptorKills > 0) {
             // Could be a thargoid combat zones if interceptors and scouts are there
-            cztype = CombatZones.ThargoidCombatZone;
+            cztype = CombatZones.AXCombatZone;
             // Still unknown
             grade = null;
         } else {
diff --git a/EDPlayerJournal/CombatZones.cs b/EDPlayerJournal/CombatZones.cs
index 786642f..f369459 100644
--- a/EDPlayerJournal/CombatZones.cs
+++ b/EDPlayerJournal/CombatZones.cs
@@ -15,9 +15,9 @@ public class CombatZones {
     public static readonly string ShipCombatZone = "Ship";
 
     /// <summary>
-    /// Thargoid combat zone
+    /// AX combat zone
     /// </summary>
-    public static readonly string ThargoidCombatZone = "Thargoid";
+    public static readonly string AXCombatZone = "AX";
 
     /// <summary>
     /// Difficulty low
@@ -33,4 +33,9 @@ public class CombatZones {
     /// Difficulty high
     /// </summary>
     public static readonly string DifficultyHigh = "High";
+
+    /// <summary>
+    /// Very high difficulty, so far AX combat zone only
+    /// </summary>
+    public static readonly string DifficultyVeryHigh = "Very High";
 }
diff --git a/EliteBGS/MainWindow.xaml b/EliteBGS/MainWindow.xaml
index f9e8b2d..0565b95 100644
--- a/EliteBGS/MainWindow.xaml
+++ b/EliteBGS/MainWindow.xaml
@@ -110,13 +110,14 @@
                                                         <Button x:Name="Low" Content="Low" Click="Low_Click"/>
                                                         <Button x:Name="Med" Content="Med" Click="Med_Click"/>
                                                         <Button x:Name="High" Content="High" Click="High_Click"/>
+                                                        <Button x:Name="VeryHigh" Content="Very High" Click="VeryHigh_Click" />
                                                     </StackPanel>
                                                 </Expander>
                                                 <Expander Header="Type">
                                                     <StackPanel Orientation="Vertical">
                                                         <Button Content="Ground" x:Name="Ground" Click="Ground_Click"/>
                                                         <Button Content="Ship" x:Name="Ship" Click="Ship_Click"/>
-                                                        <Button Content="Thargoid" x:Name="Thargoid" Click="Thargoid_Click"/>
+                                                        <Button Content="AX" x:Name="Thargoid" Click="Thargoid_Click"/>
                                                     </StackPanel>
                                                 </Expander>
                                             </StackPanel>
diff --git a/EliteBGS/MainWindow.xaml.cs b/EliteBGS/MainWindow.xaml.cs
index 712fab5..2a19d18 100644
--- a/EliteBGS/MainWindow.xaml.cs
+++ b/EliteBGS/MainWindow.xaml.cs
@@ -309,6 +309,16 @@ public partial class MainWindow : Window {
         RefreshView();
     }
 
+    private void VeryHigh_Click(object sender, RoutedEventArgs e) {
+        CombatZone transaction = GetTransaction<CombatZone>(sender);
+        if (transaction == null) {
+            return;
+        }
+
+        transaction.Grade = CombatZones.DifficultyVeryHigh;
+        RefreshView();
+    }
+
     private void Ground_Click(object sender, RoutedEventArgs e) {
         CombatZone transaction = GetTransaction<CombatZone>(sender);
         if (transaction == null) {
@@ -335,7 +345,7 @@ public partial class MainWindow : Window {
             return;
         }
 
-        transaction.Type = CombatZones.ThargoidCombatZone;
+        transaction.Type = CombatZones.AXCombatZone;
         RefreshView();
     }
 
diff --git a/EliteBGS/Objective.cs b/EliteBGS/Objective.cs
index 052b807..cd55908 100644
--- a/EliteBGS/Objective.cs
+++ b/EliteBGS/Objective.cs
@@ -56,14 +56,14 @@ public class UITransaction {
         }
     }
 
-    public Visibility IsThargoidCombatZone {
+    public Visibility IsAXCombatZone {
         get {
             CombatZone combat = Transaction as CombatZone;
             if (combat == null) {
                 return Visibility.Hidden;
             }
 
-            if (string.Compare(combat.Type, CombatZones.ThargoidCombatZone) == 0) {
+            if (string.Compare(combat.Type, CombatZones.AXCombatZone) == 0) {
                 return Visibility.Visible;
             }