Coast Guard Change of Command U.S. Coast Guard Admiral Thomas Collins (left), outgoing commandant of the Coast Guard, Michael Chertoff (center), secretary of Homeland Security, and U.S. Coast Guard Admiral Thad Allen, incoming commandant of the Coast Guard, participate in the relief of command during the U.S. Coast Guard’s change of command ceremony at Fort McNair, Washington, D.C., May 25, 2006. SHARE: Download: Full Size (0.09 MB) Credit: VIRIN: 186384-A-PHL09-182.jpg Photo Gallery