DSD visits Davis-Monthan AFB Deputy Defense Secretary Bob Work speaks with Air Force officers and enlisted personnel during a lunch at the dining hall at Davis-Monthan Air Force Base in Tucson, Ariz., Dec. 2, 2016. DoD photo by Army Sgt. Amber I. Smith SHARE: Download: Full Size (1.16 MB) Tags: Bob Work, DSD, DepSecDef, Airmen Credit: Sgt. Amber I. Smith VIRIN: 161202-D-SV709-116.JPG Photo Gallery