U.S. Air Force Chief Master Sgt. Jack Johnson Jr., NATO command senior enlisted leader, addresses diamond council meeting attendees at Joint Base Langley-Eustis, Va., Sept. 23, 2016. Johnson spoke about the importance of leadership to junior enlisted members, as well as current and future threats that the U.S. may be facing. (U.S. Air Force photo by Airman 1st Class Derek Seifert)