200416-N-LW757-1008 LOS ANGELES (April 16, 2020) Lt. j.g. Daniela Jenkins, right, from Omaha, Neb., teaches Hospital Corpsman 3rd Class Tamarra Francois, from Rochester, N.Y., how to administer medication through an orogastric tube aboard the hospital ship USNS Mercy (T-AH 19), April 16, 2020. Orogastric tubes are small tubes placed through either the nose or the mouth and end with the tip in the stomach. 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 Seaman Luke Cunningham/Released)