A picture made available 18 JULY 2012 Chief of Naval Operations (CNO) Adm. Jonathan Greenert, left, and Secretary of the Navy (SECNAV) the Honorable Ray Mabus observe as the Military Sealift Command fleet replenishment oiler USNS Henry J. Kaiser (T-AO 187), background, transfers biofuels to the guided-missile cruiser USS Princeton (CG 59) during a replenishment at sea.