Karen Gardell Karen Gardell, a registered nurse health educator assigned to Naval Medical Center San Diego’s Health and Wellness department, teaches “Operation: Healthy Living,” a virtual class that promotes healthy behaviors and lifestyles, Aug. 6, 2020, in San Diego, Calif. SHARE: Download: Full Size (0.83 MB) Tags: Coronavirus Credit: Navy Petty Officer 3rd Class Jake Greenberg VIRIN: 200806-N-DA693-1004C.JPG Photo Gallery