170411-N-RZ514-182 ARABIAN GULF (April 11, 2017) Sailors unload mail from an MH-53E Sea Dragon attached to the "Blackhawks" of Helicopter Mine Countermeasures Squadron (HM) 15 aboard the aircraft carrier USS George H.W. Bush (CVN 77). George H.W. Bush is deployed in the U.S. 5th Fleet area of operations in support of maritime security operations designed to reassure allies and partners, and preserve the freedom of navigation and the free flow of commerce in the region. (U.S. Navy photo by Mass Communication Specialist Seaman Jennifer M. Kirkman/Released)