If you're playing Call of Duty: Warzone, you probably have an opinion on Dead Silence.
The popular field upgrade does exactly what it says on the tin: it temporarily makes your footsteps silent. But there's more: it also makes your movement slightly faster.
It's extremely powerful in Warzone. Getting the jump on an opponent is often the name of the game, and if they can't hear your footsteps, you're at a distinct advantage.