(1917-1918) Soldiers of the 505th Service Battalion (an African-American unit) on deck, wearing life preservers as they pass through the submarine zone during the ship's second trip to France, circa late 1917. Mess kits are in evidence and some of the men are eating. Courtesy of the Naval Historical Foundation, Washington, D.C. - USS President Lincoln Collection. U.S. Naval History and Heritage Command Photograph.