Health History Sally Abare, a nurse practitioner with Operation Warp Speed, verifies a patient’s health history at Joint Base San Antonio-Lackland, Texas, Oct. 28, 2020. Patients are evaluated and tested to determine their eligibility to participate in the vaccine clinical study. SHARE: Download: Full Size (7.73 MB) Tags: coronavirus Credit: Air Force Airman 1st Class Melody Bordeaux VIRIN: 201028-F-JG587-1006A.JPG Photo Gallery