Patient Screening Alfiya Mityukova, registered nurse, and Roderick Johnson, research assistant, demonstrate patient screening for the Operation Warp Speed COVID-19 vaccine trial at Brooke Army Medical Center, Fort Sam Houston, Texas, Nov. 16, 2020. BAMC and Wilford Hall Ambulatory Surgical Center are participating in the phase 3 trial to evaluate the vaccine under development by AstraZeneca as part of a national initiative to accelerate the development, production and distribution of COVID-19 vaccines, therapeutics and diagnostics. SHARE: Download: Full Size (1.35 MB) Credit: Jason W. Edwards, Army VIRIN: 201116-A-HZ730-1009M.JPG Photo Gallery