Patient Screening Army Col. April Critelli, a physician’s assistant, screens a patient for COVID-19 at the McWethy Troop Medical Clinic, Fort Sam Houston, Texas, May 13, 2019. Critelli is the first medical soldier to return to active duty from retirement during the COVID-19 crisis. SHARE: Download: Full Size (4.31 MB) Tags: Army, Coronavirus Credit: Jason W. Edwards, Army VIRIN: 200513-A-HZ730-1009.JPG Photo Gallery