Mask Fit Test Airmen perform N95 mask fit tests at Joint Base Pearl Harbor-Hickam, Hawaii, Jan. 7, 2022. Fit tests are done to ensure medical personnel properly wear personal protective equipment while conducting patient care during the pandemic. SHARE: Download: Full Size (1.72 MB) Tags: Air Force, Coronavirus Credit: Air Force Staff Sgt. Alan Ricker VIRIN: 220107-F-JA727-0044A.JPG Photo Gallery