New Jersey Air National Guardsmen with the 108th Communications Flight, listen as Senior Airman Jordan C. Petro, radio frequency transmissions systems technician with the 52nd Communication Flight, tests a radio device's warning alert transmission, at Spangdahlem Air Base, Germany, Mar. 19, 2019. The 108th CF members assisted in maintaining the warning alert systems located throughout the overseas base as part of a two-week annual training with their active duty counterparts. (U.S. Air National Guard photo by Airman 1st Class Andrea A. S. Williamson)