A U.S. Marine advisor, and joint terminal attack controller or JTAC, with Task Force Southwest, communicates with the pilots that are scheduled to pick-up Marines at Bost Airfield, Afghanistan, May 20, 2017. Task Force Southwest, comprised of approximately 300 Marines and Sailors from II Marine Expeditionary Force, are training, advising and assisting the Afghan National Army 215th Corps and the 505th Zone National Police. (U.S. Marine Corps photo by Sgt. Justin T. Updegraff) - A U.S. Marine advisor, and joint terminal attack controller or JTAC, with Task Force Southwest, communicates with the pilots that are scheduled to pick-up Marines at Bost Airfield, Afghanistan, May 20, 2017. Task Force Southwest, comprised of approximately 300 Marines and Sailors from II Marine Expeditionary Force, are training, advising and assisting the Afghan National Army 215th Corps and the 505th Zone National Police. (U.S. Marine Corps photo by Sgt. Justin T. Updegraff)