sentences:  Mako 30 was forced off the peak due to its losses and requested the assistance of the quick-reaction force mainly made up of Rangers from the 1st Battalion Ranger located at Bagram Air Base, led by Captain Nate Self.Master Sergeant Chapman was mistakenly believed to have been killed prior to Mako 30 withdrawing from the peak.Alone and wounded, facing superior numbers of enemy insurgents, drone footage showed Sergeant Chapman killing at least two of the insurgents, one in hand-to-hand combat, before being killed himself.