DAM DUTY U.S. servicemembers assigned to the the Military Sealift Command hospital ship USNS Comfort carry bags of rocks into the rainforest to help build a dam that will provide clean water for the Embera tribe in the Colon province of Panama, June 2, 2009. Panama is the fourth stop in Operation Continuing Promise 2009. SHARE: Download: Full Size (0.09 MB) Credit: VIRIN: 553542-T-CYX27-835.jpg Photo Gallery