Preparing Samples Air Force Staff Sgt. Tyler Byrd, noncommissioned officer in charge of Immunology, and Air Force Tech. Sgt. Jennifer Weigl, noncommissioned officer in charge of microbiology, prepare patient samples for COVID-19 extraction at Brooke Army Medical Center, Joint Base San Antonio-Fort Sam Houston, Texas, June 1, 2020. BAMC laboratory technicians are completing COVID tests of all samples taken from patients at BAMC and its neighboring communities. SHARE: Download: Full Size (6.93 MB) Credit: Air Force Senior Master Sgt. Sarah Hanaway VIRIN: 200601-A-A4714-1002A.JPG Photo Gallery