diff --git a/OpenRA.Game/Traits/Health.cs b/OpenRA.Game/Traits/Health.cs
index bddc9c9c74..2d18176c1f 100755
--- a/OpenRA.Game/Traits/Health.cs
+++ b/OpenRA.Game/Traits/Health.cs
@@ -15,9 +15,15 @@ namespace OpenRA.Traits
 {
 	public class HealthInfo : ITraitInfo, UsesInit<HealthInit>
 	{
+		[Desc("HitPoints")]
 		public readonly int HP = 0;
+
 		[Desc("Physical size of the unit used for damage calculations.  Impacts within this radius apply full damage")]
 		public readonly WRange Radius = new WRange(426);
+
+		[Desc("Don't trigger interfaces such as AnnounceOnKill.")]
+		public readonly bool NotifyAppliedDamage = true;
+
 		public virtual object Create(ActorInitializer init) { return new Health(init, this); }
 	}
 
@@ -92,7 +98,7 @@ namespace OpenRA.Traits
 			foreach (var nd in self.TraitsImplementing<INotifyDamageStateChanged>())
 				nd.DamageStateChanged(self, ai);
 
-			if (repairer != null && repairer.IsInWorld && !repairer.IsDead())
+			if (Info.NotifyAppliedDamage && repairer != null && repairer.IsInWorld && !repairer.IsDead())
 				foreach (var nd in repairer.TraitsImplementing<INotifyAppliedDamage>()
 				         .Concat(repairer.Owner.PlayerActor.TraitsImplementing<INotifyAppliedDamage>()))
 					nd.AppliedDamage(repairer, self, ai);
@@ -135,7 +141,7 @@ namespace OpenRA.Traits
 				foreach (var nd in self.TraitsImplementing<INotifyDamageStateChanged>())
 					nd.DamageStateChanged(self, ai);
 
-			if (attacker != null && attacker.IsInWorld && !attacker.IsDead())
+			if (Info.NotifyAppliedDamage && attacker != null && attacker.IsInWorld && !attacker.IsDead())
 				foreach (var nd in attacker.TraitsImplementing<INotifyAppliedDamage>()
 					 .Concat(attacker.Owner.PlayerActor.TraitsImplementing<INotifyAppliedDamage>()))
 				nd.AppliedDamage(attacker, self, ai);
diff --git a/OpenRA.Mods.RA/Activities/LayMines.cs b/OpenRA.Mods.RA/Activities/LayMines.cs
index d1f60de62d..3aa7cdb581 100644
--- a/OpenRA.Mods.RA/Activities/LayMines.cs
+++ b/OpenRA.Mods.RA/Activities/LayMines.cs
@@ -26,8 +26,9 @@ namespace OpenRA.Mods.RA.Activities
 			var limitedAmmo = self.TraitOrDefault<LimitedAmmo>();
 			if (!limitedAmmo.HasAmmo())
 			{
+				var info = self.Info.Traits.Get<MinelayerInfo>();
 				// rearm & repair at fix, then back out here to refill the minefield some more
-				var buildings = self.Info.Traits.Get<MinelayerInfo>().RearmBuildings;
+				var buildings = info.RearmBuildings;
 				var rearmTarget = self.World.Actors.Where(a => self.Owner.Stances[a.Owner] == Stance.Ally
 					&& buildings.Contains(a.Info.Name))
 					.ClosestTo(self);
@@ -38,26 +39,27 @@ namespace OpenRA.Mods.RA.Activities
 				return Util.SequenceActivities(
 					new MoveAdjacentTo(self, Target.FromActor(rearmTarget)),
 					movement.MoveTo(self.World.Map.CellContaining(rearmTarget.CenterPosition), rearmTarget),
-					new Rearm(self),
+					new Rearm(self, info.RearmSound),
 					new Repair(rearmTarget),
 					this);
 			}
 
 			var ml = self.Trait<Minelayer>();
-			if (ml.Minefield.Contains(self.Location) &&
-				ShouldLayMine(self, self.Location))
+			if (ml.Minefield.Contains(self.Location) && ShouldLayMine(self, self.Location))
 			{
 				LayMine(self);
 				return Util.SequenceActivities(new Wait(20), this); // a little wait after placing each mine, for show
 			}
 
 			if (ml.Minefield.Length > 0)
+			{
 				for (var n = 0; n < 20; n++)		// dont get stuck forever here
 				{
 					var p = ml.Minefield.Random(self.World.SharedRandom);
 					if (ShouldLayMine(self, p))
 						return Util.SequenceActivities( movement.MoveTo(p, 0), this );
 				}
+			}
 
 			// TODO: return somewhere likely to be safe (near fix) so we're not sitting out in the minefield.
 
diff --git a/OpenRA.Mods.RA/Activities/Rearm.cs b/OpenRA.Mods.RA/Activities/Rearm.cs
index ce9a37b327..c3bb48aca7 100644
--- a/OpenRA.Mods.RA/Activities/Rearm.cs
+++ b/OpenRA.Mods.RA/Activities/Rearm.cs
@@ -19,18 +19,21 @@ namespace OpenRA.Mods.RA.Activities
 		readonly LimitedAmmo limitedAmmo;
 		int ticksPerPip = 25 * 2;
 		int remainingTicks = 25 * 2;
+		string sound = null;
 
-		public Rearm(Actor self)
+		public Rearm(Actor self, string sound = null)
 		{
 			limitedAmmo = self.TraitOrDefault<LimitedAmmo>();
 			if (limitedAmmo != null)
 				ticksPerPip = limitedAmmo.ReloadTimePerAmmo();
 			remainingTicks = ticksPerPip;
+			this.sound = sound;
 		}
 
 		public override Activity Tick(Actor self)
 		{
-			if (IsCanceled || limitedAmmo == null) return NextActivity;
+			if (IsCanceled || limitedAmmo == null)
+				return NextActivity;
 
 			if (--remainingTicks == 0)
 			{
@@ -44,6 +47,8 @@ namespace OpenRA.Mods.RA.Activities
 					return NextActivity;
 
 				hostBuilding.Trait<RenderBuilding>().PlayCustomAnim(hostBuilding, "active");
+				if (sound != null)
+					Sound.Play(sound, self.CenterPosition);
 
 				remainingTicks = limitedAmmo.ReloadTimePerAmmo();
 			}
diff --git a/OpenRA.Mods.RA/AnnounceOnBuild.cs b/OpenRA.Mods.RA/AnnounceOnBuild.cs
index 8b72aa8070..315be243de 100644
--- a/OpenRA.Mods.RA/AnnounceOnBuild.cs
+++ b/OpenRA.Mods.RA/AnnounceOnBuild.cs
@@ -12,6 +12,7 @@ using OpenRA.Traits;
 
 namespace OpenRA.Mods.RA
 {
+	[Desc("Play the Build voice of this actor when trained.")]
 	public class AnnounceOnBuildInfo : ITraitInfo
 	{
 		public object Create(ActorInitializer init) { return new AnnounceOnBuild(init.self); }
diff --git a/OpenRA.Mods.RA/AnnounceOnKill.cs b/OpenRA.Mods.RA/AnnounceOnKill.cs
index 424f4d5906..fc5ef1c245 100644
--- a/OpenRA.Mods.RA/AnnounceOnKill.cs
+++ b/OpenRA.Mods.RA/AnnounceOnKill.cs
@@ -12,15 +12,36 @@ using OpenRA.Traits;
 
 namespace OpenRA.Mods.RA
 {
-	public class AnnounceOnKillInfo : TraitInfo<AnnounceOnKill> {}
+	[Desc("Play the Kill voice of this actor when eliminating enemies.")]
+	public class AnnounceOnKillInfo : ITraitInfo
+	{
+		[Desc("Minimum duration (in seconds) between sound events.")]
+		public readonly int Interval = 5;
+
+		public object Create(ActorInitializer init) { return new AnnounceOnKill(init.self, this); }
+	}
 
 	public class AnnounceOnKill : INotifyAppliedDamage
 	{
+		readonly AnnounceOnKillInfo info;
+
+		int lastAnnounce;
+
+		public AnnounceOnKill(Actor self, AnnounceOnKillInfo info)
+		{
+			this.info = info;
+			lastAnnounce = -info.Interval * 25;
+		}
+
 		public void AppliedDamage(Actor self, Actor damaged, AttackInfo e)
 		{
-			if (e.DamageState == DamageState.Dead)
-				Sound.PlayVoice("Kill", self, self.Owner.Country.Race);
+			if (e.DamageState == DamageState.Dead && damaged != e.Attacker) // don't notify suicides
+			{
+				if (self.World.WorldTick - lastAnnounce > info.Interval * 25)
+					Sound.PlayVoice("Kill", self, self.Owner.Country.Race);
+
+				lastAnnounce = self.World.WorldTick;
+			}
 		}
 	}
 }
-
diff --git a/OpenRA.Mods.RA/C4Demolition.cs b/OpenRA.Mods.RA/C4Demolition.cs
index 1c386410ff..3760ec3a19 100644
--- a/OpenRA.Mods.RA/C4Demolition.cs
+++ b/OpenRA.Mods.RA/C4Demolition.cs
@@ -30,6 +30,8 @@ namespace OpenRA.Mods.RA
 		public readonly int FlashInterval = 4;
 		[Desc("Duration of each flash")]
 		public readonly int FlashDuration = 3;
+		[Desc("Voice string when planting explosive charges.")]
+		public readonly string Voice = "Attack";
 
 		public object Create(ActorInitializer init) { return new C4Demolition(this); }
 	}
@@ -82,7 +84,7 @@ namespace OpenRA.Mods.RA
 
 		public string VoicePhraseForOrder(Actor self, Order order)
 		{
-			return order.OrderString == "C4" ? "Attack" : null;
+			return order.OrderString == "C4" ? info.Voice : null;
 		}
 
 		class C4DemolitionOrderTargeter : UnitOrderTargeter
diff --git a/OpenRA.Mods.RA/Minelayer.cs b/OpenRA.Mods.RA/Minelayer.cs
index c4f9a17789..13b8128a6b 100644
--- a/OpenRA.Mods.RA/Minelayer.cs
+++ b/OpenRA.Mods.RA/Minelayer.cs
@@ -23,6 +23,8 @@ namespace OpenRA.Mods.RA
 		[ActorReference] public readonly string Mine = "minv";
 		[ActorReference] public readonly string[] RearmBuildings = { "fix" };
 
+		public readonly string RearmSound = "minelay1.aud";
+
 		public readonly float MinefieldDepth = 1.5f;
 
 		public object Create(ActorInitializer init) { return new Minelayer(init.self); }
@@ -30,7 +32,7 @@ namespace OpenRA.Mods.RA
 
 	class Minelayer : IIssueOrder, IResolveOrder, IPostRenderSelection, ISync
 	{
-		/* [Sync] when sync can cope with arrays! */
+		/* TODO: [Sync] when sync can cope with arrays! */
 		public CPos[] Minefield = null;
 		[Sync] CPos minefieldStart;
 		Actor self;
diff --git a/mods/ra/maps/desert-shellmap/map.yaml b/mods/ra/maps/desert-shellmap/map.yaml
index 711f967fa9..20e421c712 100644
--- a/mods/ra/maps/desert-shellmap/map.yaml
+++ b/mods/ra/maps/desert-shellmap/map.yaml
@@ -1338,6 +1338,8 @@ Rules:
 			Percentage: 0
 		InvulnerabilityUpgrade@UNKILLABLE:
 			RequiresUpgrade: unkillable
+	E7:
+		-Selectable:
 
 Sequences:
 
diff --git a/mods/ra/rules/infantry.yaml b/mods/ra/rules/infantry.yaml
index c96304ea82..67a182d115 100644
--- a/mods/ra/rules/infantry.yaml
+++ b/mods/ra/rules/infantry.yaml
@@ -250,6 +250,7 @@ E7:
 		Range: 6c0
 	C4Demolition:
 		C4Delay: 45
+		Voice: Demolish
 	Passenger:
 		PipType: Red
 	Armament@PRIMARY:
@@ -264,6 +265,8 @@ E7:
 	TakeCover:
 	RenderInfantry:
 		IdleAnimations: idle1,idle2
+	AnnounceOnBuild:
+	AnnounceOnKill:
 
 MEDI:
 	Inherits: ^Infantry
diff --git a/mods/ra/rules/misc.yaml b/mods/ra/rules/misc.yaml
index 08bbc5973b..db63c0f944 100644
--- a/mods/ra/rules/misc.yaml
+++ b/mods/ra/rules/misc.yaml
@@ -7,6 +7,7 @@ MINP:
 		Weapon: APMine
 	Health:
 		HP: 100
+		NotifyAppliedDamage: false
 	Armor:
 		Type: Light
 	RenderSimple:
@@ -35,6 +36,7 @@ MINV:
 		Weapon: ATMine
 	Health:
 		HP: 100
+		NotifyAppliedDamage: false
 	Armor:
 		Type: Light
 	RenderSimple:
diff --git a/mods/ra/voices.yaml b/mods/ra/voices.yaml
index 3adc13e76d..39d5ebd718 100644
--- a/mods/ra/voices.yaml
+++ b/mods/ra/voices.yaml
@@ -46,11 +46,14 @@ MechanicVoice:
 TanyaVoice:
 	Voices:
 		Select: yo1,yes1,yeah1
-		Move: rokroll1,onit1,cmon1
-		Attack: tuffguy1,bombit1,gotit1
+		Move: onit1,cmon1,rokroll1
+		Attack: tuffguy1,bombit1
 		Die: tandeth1
 		Burned: tandeth1
 		Zapped: tandeth1
+		Build: laugh1
+		Kill: gotit1,lefty1
+		Demolish: keepem1,tuffguy1
 
 DogVoice:
 	Voices:
diff --git a/mods/ra/weapons.yaml b/mods/ra/weapons.yaml
index 7e1864719e..dda8f763bf 100644
--- a/mods/ra/weapons.yaml
+++ b/mods/ra/weapons.yaml
@@ -1093,7 +1093,7 @@ DepthCharge:
 		SmudgeType: Crater
 	Warhead@3Eff: CreateEffect
 		Explosion: large_splash
-		ImpactSound: splash9.aud
+		ImpactSound: h2obomb2.aud
 	Warhead@4EffHit: CreateEffect
 		Explosion: small_explosion
 		ImpactSound: kaboom15.aud