200330-N-FK318-1017 LOS ANGELES (March 30, 2020) Hospital Corpsman 3rd Class Deja Blandino, from Miami,Fla., draws blood from Hospital Corpsman 2nd Class Mikael Peters, from Laport, Ind., during a walking blood bank evolution aboard the hospital ship USNS Mercy (T-AH 19), March 30, 2020. Walking blood banks provide a donor pool database of different blood types in case whole blood is needed for patients. Mercy deployed in support of the nation's COVID-19 response efforts, and will serve as a referral hospital for non-COVID-19 patients currently admitted to shore-based hospitals. This allows shore base hospitals to focus their efforts on COVID-19 cases. One of the Department of Defense's missions is Defense Support of Civil Authorities. DoD is supporting the Federal Emergency Management Agency, the lead federal agency, as well as state, local and public health authorities in helping protect the health and safety of the American people. (U.S. Navy photo by Mass Communication Specialist 2nd Class Abigayle Lutz)