160120-N-LV331-006 PACIFIC OCEAN (Jan. 20, 2016) Secretary of the Navy (SECNAV) Ray Mabus greets Sailors assigned to the guided-missile destroyer USS William P. Lawrence (DDG 110) before eating lunch with them on the ship�s mess decks. Mabus and Secretary of Agriculture Tom Vilsack, not shown, flew out to William P. Lawrence to witness it replenishing its tanks with alternative fuel from the fleet replenishment oiler USNS Guadalupe (T-AO 200) as part of the Department of the Navy�s Great Green Fleet initiative that demonstrates the sea service�s efforts to transform its energy use. (U.S. Navy photo by Mass Communication Specialist 2nd Class Armando Gonzales/Released)