Konar Valley, Eastern Afghanistan 6th of may 2009: A US Army Black Hawk Medevac helicopter is going on a mission up the Konar Valley towards Bostik in Eastern Afghanistan. The valleys close to the Pakistani border are still considered very volatile with attacks on observation posts and aircraft taking place on a daily basis. All Medevac Helicopters fly with at least one armed chase helicopter. Geneva conventions prevent Medevac helicopters from carrying any mounted weapons onboard.