"Stun Grenade" or "Flash Grenade" used by
law enforcement. Combines a flash of
light and a loud noise (imagine that) to startle, immobilize, or stun an enemy as the team makes entry.
It'
s also the grenade in CS that makes your screen
go white for a full second. Desired use is associated with room clearing and pwning the other team, so why are my teammates the only ones who ever seem to use them on me?