Dark Horse Marine Corps Cpl. Jose Benavidesrios Jr. uses an M27 infantry automatic rifle at the Jungle Warfare Training Center in Okinawa, Japan, Oct. 13, 2021, during Dark Horse, a field exercise. SHARE IMAGE: Download Image: Full Size (1.42 MB) Tags: marine corps, indo-pacific, dark horse 21 Photo By: Lance Cpl. Grace Gerlach VIRIN: 211013-M-ST547-1092Y.JPG Photo Gallery