SEAL Team Six

The United States Navy Special Warfare Development Group, often shortened to DEVGRU and informally referred to as SEAL Team Six is a counter-terrorism unit under the jurisdiction of the US Navy with its members drawn from U.S. Navy SEALs members.

Call of Duty 4: Modern Warfare
It was part of the U.S. military assault on the unnamed Middle Eastern country, and was involved in the attack on the country's capital city, where terrorist leader Al-Asad was believed to be located. During the level "Shock and Awe", SEAL Team Six detected and confirmed a nuclear device at the center of the city, and notified U.S. field command, which dispatched NEST teams to neutralize the warhead. However, they were unsuccessful, and the nuclear warhead detonated with substantial casualties to U.S. military forces. It is assumed they are all dead, although they may have evacuated in time to have escaped the blast.

Call of Duty Black Ops II
SEAL Team Six makes an appearance in Call of Duty: Black Ops II. They're against Militia on Turbine, Mercs on Hijacked, and SDC on Cargo. Harper and David Mason are members of the group as they wear the same camo as the SEALS in Multiplayer.

Call of Duty: Black Ops II

 * Harper
 * David Mason

Call of Duty: Black Ops II

 * KAP-40
 * M8A1
 * Storm PSR