Deathstreaks

=Deathstreak=

From the Call of Duty Wiki
Deathstreaks are a feature introduced in Call of Duty: Modern Warfare 2. They provide unique abilities after being killed, although their effectiveness is limited in order to discourage players from intentionally dying in streaks to activate them. They will activate upon each respawn the player has after the necessary number of deaths until a kill is scored. When the deathstreak is snapped, the deathstreak perk remains in effect for the remainder of that life; the following respawn will not have the deathstreak active.