'Rambo' Soldier Admits Sniper Murder Plot:
Joseph Manuel Hunter, 49, known as "Rambo", admitted to conspiring to murder a law enforcement officer and two other charges.
Hunter was one of five former soldiers charged in 2013 with agreeing to provide security for what he believed were Colombian cartel leaders.
But the individuals were actually informants for the US Drug Enforcement Administration.
Hunter, who was a sniper instructor in the US Army, is the fourth defendant to plead guilty after former Sergeant Timothy Vamvakias, former German sniper Dennis Gogel and former Polish sniper Slawomir Soborski.