190415-N-WD133-010 SAN DIEGO (April 15, 2019) Capt. John Volk, acting commanding officer of the USNS Mercy (T-AH-19) Medical Treatment Facility, explains some of the treatment teams capabilities to Ambassador Henne Schuwer of the Kingdom of the Netherlands during a tour of the hospital ship. (U.S. Navy photo by Sarah Burford/Released)