U.S. Army Cpl. Gregory McLellan and U.S. Marine Corps Cpl. Clinton Smith, Joint Corporals Leadership Development Course students, plot grid points during the land navigation portion of Camp Lemonnier's Joint Corporal’s Leadership Development Course at Arta, Djibouti, March 3, 2016. During the evaluation Soldiers, Sailors, Airmen, and Marines had to find eight different points and navigate to those points in a timed event. (U.S. Air Force photo by Tech. Sgt. Dan DeCook) - U.S. Army Cpl. Gregory McLellan and U.S. Marine Corps Cpl. Clinton Smith, Joint Corporals Leadership Development Course students, plot grid points during the land navigation portion of Camp Lemonnier's Joint Corporal’s Leadership Development Course at Arta, Djibouti, March 3, 2016. During the evaluation Soldiers, Sailors, Airmen, and Marines had to find eight different points and navigate to those points in a timed event. (U.S. Air Force photo by Tech. Sgt. Dan DeCook)