Senior Airman Diego Rojas Rodriguez, 341st Civil Engineer Squadron electrical systems journeyman, browses his electrical equipment March 13, 2017, at Malmstrom Air Force Base, Mont. The electrical team is replacing more than 12,000 lamps on base at nine facilities with LEDs, and they have already completed three of the nine buildings. (U.S. Air Force photo/Airman 1st Class Daniel Brosam)