Hyten Briefing Air Force Gen. John E. Hyten, the vice chairman of the Joint Chiefs of Staff, describes the tiered testing system that the Defense Department is putting in place to combat coronavirus during a news conference at the Pentagon, April 22, 2020. SHARE: Download: Full Size (6.01 MB) Tags: hyten, vice chairman Credit: Air Force Staff Sgt. Jackie Sanders, DOD VIRIN: 200422-D-XI929-1012C.JPG Photo Gallery