Two U.S. Army pilots are killed.[18][19] They were assigned to the 2nd Squadron, 6th Cavalry Regiment, 25th Combat Aviation Brigade, 25th Infantry Division, Schofield Barracks.[20] 19 September – One U.S. service member is killed and 12 others injured when a UH-60 Blackhawk helicopter goes down inside of Joint Base Balad.[21] 26 January – Two OH-58 Kiowas collide near Kirkuk while evading enemy fire, killing four soldiers.[22][23][24][25][26]