U.S. Air Force Gen. Maryanne Miller, center left, Air Mobility Command commander, Chief Master Sgt. Terrence Greene, center right, AMC command chief, and Master Sgt. Samantha Soran, left, 60th Aerospace Medicine Squadron, listen to Lt. Col. Jason Kelly, right, 60th AMDS, during a visit to the hyperbaric chamber at David Grant USAF Medical Center, Travis Air Force Base, California, April 16, 2019. During the four-day base tour Miller and Greene met with Airmen across Travis to see firsthand how the base enhances AMC’s global mobility capabilities. (U.S. Air Force photo by Heide Couch) (U.S. Air Force photo by Heide Couch)