diff --git a/OpenRA.Game/ShroudRenderer.cs b/OpenRA.Game/ShroudRenderer.cs
index aabe46bb7c..ca9fb59cc8 100644
--- a/OpenRA.Game/ShroudRenderer.cs
+++ b/OpenRA.Game/ShroudRenderer.cs
@@ -46,6 +46,8 @@ namespace OpenRA
 			
 			sprites = new Sprite[map.MapSize, map.MapSize];
 			fogSprites = new Sprite[map.MapSize, map.MapSize];
+
+			shroud.Dirty += () => dirty = true;
 		}
 
 		public bool HasGPS
diff --git a/OpenRA.Game/Traits/World/Shroud.cs b/OpenRA.Game/Traits/World/Shroud.cs
index 73bfeea354..8cdb4c9b36 100644
--- a/OpenRA.Game/Traits/World/Shroud.cs
+++ b/OpenRA.Game/Traits/World/Shroud.cs
@@ -23,6 +23,7 @@ using System.Linq;
 using OpenRA.FileFormats;
 using OpenRA.GameRules;
 using System.Drawing;
+using System;
 
 namespace OpenRA.Traits
 {
@@ -38,6 +39,7 @@ namespace OpenRA.Traits
 		public int[,] visibleCells;
 		public bool[,] exploredCells;
 		public Rectangle? exploredBounds;
+		public event Action Dirty = () => { };
 
 		public Shroud(Actor self, ShroudInfo info)
 		{
@@ -78,6 +80,8 @@ namespace OpenRA.Traits
 			}
 
 			vis[a] = v;
+
+			Dirty();
 		}
 
 		static IEnumerable<int2> GetVisOrigins(Actor a)
@@ -107,6 +111,8 @@ namespace OpenRA.Traits
 					--visibleCells[q.X, q.Y];
 
 			vis.Remove(a);
+
+			Dirty();
 		}
 
 		public void UpdateActor(Actor a)
@@ -123,6 +129,8 @@ namespace OpenRA.Traits
 			var box = new Rectangle(center.X - range, center.Y - range, 2 * range + 1, 2 * range + 1);
 			exploredBounds = exploredBounds.HasValue ?
 				Rectangle.Union(exploredBounds.Value, box) : box;
+
+			Dirty();
 		}
 
 		public void ResetExploration()		// for `hide map` crate
@@ -130,6 +138,8 @@ namespace OpenRA.Traits
 			for (var j = 0; j <= exploredCells.GetUpperBound(1); j++)
 				for (var i = 0; i <= exploredCells.GetUpperBound(0); i++)
 					exploredCells[i, j] = visibleCells[i, j] > 0;
+
+			Dirty();
 		}
 	}
 }
diff --git a/OpenRA.Mods.RA/SpyPlanePower.cs b/OpenRA.Mods.RA/SpyPlanePower.cs
index 92cf2aa65f..305b6a5c80 100644
--- a/OpenRA.Mods.RA/SpyPlanePower.cs
+++ b/OpenRA.Mods.RA/SpyPlanePower.cs
@@ -26,7 +26,7 @@ namespace OpenRA.Mods.RA
 {
 	class SpyPlanePowerInfo : SupportPowerInfo
 	{
-		public readonly int Range = 10;
+		public readonly float RevealTime = .1f;	// minutes
 		public override object Create(Actor self) { return new SpyPlanePower(self,this); }
 	}
 
@@ -58,9 +58,13 @@ namespace OpenRA.Mods.RA
 
 				plane.CancelActivity();
 				plane.QueueActivity(new Fly(Util.CenterOfCell(order.TargetLocation)));
-				plane.QueueActivity(new CallFunc(
-					() => Owner.Shroud.Explore(Owner.World, order.TargetLocation,
-						(Info as SpyPlanePowerInfo).Range)));
+				plane.QueueActivity(new CallFunc(() => plane.World.AddFrameEndTask( w => 
+					{
+						
+						var camera = w.CreateActor("camera", order.TargetLocation, Owner);
+						camera.QueueActivity(new Wait((int)(25 * 60 * (Info as SpyPlanePowerInfo).RevealTime)));
+						camera.QueueActivity(new RemoveSelf());
+					})));
 				plane.QueueActivity(new FlyOffMap { Interruptible = false });
 				plane.QueueActivity(new RemoveSelf());
 			}
diff --git a/mods/ra/rules.yaml b/mods/ra/rules.yaml
index 9ce54a0285..1dbf21a277 100755
--- a/mods/ra/rules.yaml
+++ b/mods/ra/rules.yaml
@@ -2651,3 +2651,8 @@ WOOD:
 	Building:
 		HP: 100
 		Armor: none
+
+CAMERA:
+	Unit:
+		HP:1000
+		Sight: 10
\ No newline at end of file