Air Force Tech. Sgt. Mario Lopez-Casas, a heating, ventilation, air conditioning and refrigeration specialist with the 146th Civil Engineer Squadron in the California Air National Guard's 146th Airlift Wing, puts sheets on a hospital bed while setting up a Federal Medical Station March 29 inside the Los Angeles Convention Center as part of California's statewide COVID-19 response effort. Critical supplies from the Defense Logistics Agency’s Warstopper Progrom are being used by military members supporting the effort throughout the nation. Photo by Air National Guard Staff Sgt. Crystal Housman