HORN OF AFRICA DUTY U.S. Army Spc. Gregory Santos, with Charlie Company, 1st Battalion, 294th Light Infantry Regiment, stands guard in Arta, Djibouti, Oct. 5, 2006. Santos is currently assigned to Combined Joint Task Force - Horn of Africa where he and other Soldiers of the Guam Army National Guard are teaching a 21-day mechanics course to Djiboutian army soldiers. SHARE: Download: Full Size (0.1 MB) Credit: VIRIN: 249125-Z-IMZ32-446.jpg Photo Gallery