U.S. Navy sailors aboard the hospital ship USNS Mercy, serving as a referral hospital for non-coronavirus disease (COVID-19) patients currently admitted to shore-based hospitals, conduct an interventional radiology study and procedure on a patient aboard the ship docked in Los Angeles, California, U.S. April 18, 2020. Picture taken April 18, 2020. U.S. Navy/Mass Communication Specialist 2nd Class Abigayle Lutz/Handout via REUTERS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.