Agility perspective
U.S. Air Force Master Sgt. Joseph Cook holds a sign for Agility on the I.G. Brown Training and Education Center campus in East Tennessee, August 23, 2019, as part of a commentary series on Agility, Innovation, and Resiliency. Sergeant Cook is a professional military education instructor for the Chief Master Sergeant Paul H. Lankford Enlisted PME Center. (U.S. Air National Guard photo/Master Sgt. Mike R. Smith)