Air Force Chief of Staff Gen. Charles Q. Brown, Jr. tours the Comprehensive Operational Medicine for Battle Ready Airmen (COBRA) Clinic and receives briefs about several different programs at Aviano Air Base, Italy, Dec. 23, 2020. During the tour of the clinic, Brown was shown a sensory deprivation tank and was briefed on new innovative ideas, such as incorporating diagnosis, recovery, rehabilitation, and performance optimization into a single unified mission. (U.S. Air Force photo by Staff Sgt. Valarie Halbert)