Radford Mitchell, McDonald Army Health Center medical laboratory technician, places a sample for COVID testing into a GeneXpert XVI at Joint Base Langley-Eustis, Virginia, Feb. 7, 2022. In October 2021, the MCAHC lab acquired a GeneXpert XVI that could run 16 tests on its own. (U.S. Air Force photo by Senior Airman Anthony Nin Leclerec)