A U.S. Airmen with the 148th Air Support Operations Squadron, Pennsylvania Air National Guard, attaches a whip antenna to a Humvee, Oct. 28, 2018, in Annville, Pennsylvania. Airmen from the 148th ASOS competed in Exercise Noble Skywave 2018, an international radio competition held by the Canadian Forces Joint Signals Regiment. (U.S. Air National Guard photo by Staff Sgt. Tony Harp)