WATER OBSTACLE U.S. Navy Petty Officer 2nd Class Brian Bell negotiates a water obstacle during the French Foreign Legion Commando course at Arta Beach in Djibouti, Jan. 28, 2007. Combined Joint Task Force-Horn of Africa is a unit of United States Central Command. SHARE IMAGE: Download Image: Full Size (0.03 MB) Photo By: VIRIN: 501868-K-WBW98-561.jpg Photo Gallery