Respirator Fit Test Janet Rowe, a University of Tennessee Medical Center staff member, conducts a respirator fit test on Army 1st Lt. Sierra Brink with the 528th Hospital Center as part of the medical response team’s hospital onboarding and integration in Knoxville, Tenn., Sept. 23, 2021. Northern Command through Army North, remains committed to providing flexible Defense Department support to the whole-of-government COVID response. SHARE: Download: Full Size (2.33 MB) Tags: Navy, Coronavirus Credit: Navy Chief Barry Riley VIRIN: 210923-N-OE749-0050.JPG Photo Gallery