Wait until the enemy brings in their own killstreaks?
I usually detonate EMP when the enemy brings up air support or when its down to the last couple minutes...or when we're behind and desperate for a win.
In one match I was in, the enemy brought in a Lodestar, Care Package Chopper, and a couple UAVs. The total destruction earned me enough points for another UAV. :P --- http://youtube.com/watch?v=Pm1ytVdzfkI&search=baby%20got%20back%20sir%20mixalot Warcraft Got Back
cause if I'm getting an EMP, the other team probably isn't getting any of the above listed kill streaks. I almost never see a lodestar, Stealth Chopper or anything comparable unless I get tossed into a game. The EMP assists + VSAT assists can propel you into a steady stream of KS rewards.
Throw EMP i see hit marker i realize enemy is close i kill him i replace EMP with scavenger.
its not only good for destroying killstreaks but letting u know enemy is near the corner + u might not know if a Target Finder user is around. --- PSN/Battlelog: tactikz4 BF3/Black Ops 2 My Fav Multiplayer.