Airman 1st Class Caleb McGlone, 436th Maintenance Squadron crew chief, explains to Master Sgt. Gilbert, 436th Maintenance Squadron first sergeant, how to remove a bushing from a bell crank April 25, 2013, at the isochronal maintenance dock on Dover Air Force Base, Del. Engaging with his Airmen was one of the many reasons why Gilbert has won the 18th Air Force First Sergeant of the Year award two years in a row. (U.S. Air Force photo/Airman 1st Class Ashlin Federick)