160714-M-TM809-020 AT SEA (July 14, 2016) Naval Air Crewman (Helicopter) 3rd Class Sean Magee, assigned to the “Blackjacks” of Helicopter Sea Combat (HSC) Squadron 21, is responsible for maintaining the aircraft during flight operation. Magee is deployed aboard hospital ship USNS Mercy (T-AH 19) in support of Pacific Partnership 2016. Mercy is en route to its third mission stop in Da Nang, Vietnam. Upon arrival, partner nations will work side-by-side with local military and non-government organizations to conduct cooperative health engagements, community relation events and subject matter expert exchanges to better prepare for a natural disaster or crisis. (U.S. Marine Corps photo by Sgt. Brittney Vella/Released)