U.S. Navy Lt. j. g. Maribel Tatunay, right, an Intensive

U.S. Navy Lt. j. g. Maribel Tatunay, right, an Intensive Care Unit nurse from the Naval Medical Center in San Diego, Calif., receives her weekly shift schedule by her assigned nurse manager at Hendrick Medical Center in Abilene, Texas, Jan. 29, 2021. Military medical personnel work split shifts, each lasting 12-hours. U.S. Northern Command, through U.S. Army North, remains committed to providing flexible Department of Defense support to the whole-of-government COVID-19 response. (U.S. Army photo by Spc. Michael Ybarra, 5th Mobile Public Affairs Detachment)