Chief Warrant Officer Tom Spicer uses a sextant to acquire a line of position with the sun during the U.S. Army Warrant Officer 880A2 Celestial Exam on board the Logistic Support Vessel-1, the Gen. Frank S. Besson Jr., Aug. 13, 2011, as the watercraft sails the east coast toward Savannah, Ga. (US Army photo by Sgt. 1st Class Kelly Jo Bridgwater)