Air Force Gen. Paul J. Selva, left, vice chairman of the Joint Chiefs of Staff, exchanges greetings with Col. Christopher Amrhein; his wife, Cathy; and Chief Master Sgt. Charles Hoffman before the USO spring entertainment visit on Kadena Air Base, Japan, March 14, 2016. Amrhein and Hoffman are the vice commander and command chief master sergeant, respectively, of the 18th Wing. Air Force photo by Senior Airman Peter Reft