Python 1 is the callsign of a U.S. Military unit. They are the playable coalition faction in all multiplayer maps. They are made up of both standard U.S. soldiers and Special Operations operatives—who range from Airforce SERE specialists to assault specialists from an AFO team. Accordingly, they have access to many types of support, ranging from fire support to extra armor, and even some vehicular support. The standard rifleman is issued either an M16A4 with M203 or an M249; their designated marksmen are issued an M21 or an M24; meanwhile, the Spec Ops soldiers amongst them are either given access to an M4A1 or a M870MCS; and all classes are issued with the M9 pistol.