ROBINS AIR FORCE BASE, Ga. -- Tech. Sgt. Bradley Johnson, center, 461st Aircraft Maintenance Squadron instruments and flight controls specialist and founder of the Data Electronic Signal Working Group, demonstrates how to set up a spread spectrum time domain reflectometer at Robins Air Force Base, Georgia, Feb. 19, 2021. The DESWG, comprised of Airmen joining together to find better, faster and stronger ways to do wire maintenance, worked on the SSTDR, which sends out multiple waves and identifies repairs needed within three feet. (U.S. Air Force photo by Joseph Mather)