The 65th Communications Squadron performs preventive maintenance on Mark IVB weather system
U.S. Air Force Senior Airmen Frederick Rosario, center, trains Senior Airman Michael Johnson, left, and Airman 1st Class Michael Gunderson, on inspecting the humidity indicator for a MARK IVB Weather System during an 84-day preventive maintenance inspection Oct. 31, 2013, at Lajes Field, Azores. The weather system provides real-time, mid-Atlantic weather imagery and services to more than 2,000 users at more than 250 locations. The Airmen are radio frequency systems technicians with the 65th Communications Squadron. (U.S. Air Force photo by Tech. Sgt. Paul Villanueva II/Released)