The operation was conceived by the 2nd Battalion of the 3rd Marine Regiment (2/3) of the U.S. Marine Corps based on an operational model developed by 2/3's sister battalion, the 3rd Battalion of the 3rd Marine Regiment (3/3) which had preceded the 2nd Battalion in their combat deployment. It utilized special operations forces (SOF) units and assets, including members of the U.S. Navy SEALs and the U.S. Army Special Operations Command's 160th Special Operation's Aviation Regiment (Airborne) (SOAR(A)), for the opening phase of the operation.[2] A team of four Navy SEALs, tasked for surveillance and reconnaissance of a group of structures known to be used by Ahmad Shah and his men, fell into an ambush by Shah and his group just hours after inserting into the area by fastrope from an MH-47 helicopter. Three of the four SEALs were killed and a quick reaction force helicopter sent in for their aid was shot down with an RPG-7 rocket propelled grenade, killing all eight Navy SEALs and all eight U.S. Army Special Operations aviators on board.
The operation then became known as "Red