Capt. Chris Tymchuk calls in a simulated airstrike on Oct. 17, 2018, during Combat Raider 19-1, an exercise hosted by the 28th Bomb Wing at the Powder River Training Complex, S.D. Tymchuk is a joint tactical air controller troop commander assigned to the Royal Canadian Horse Artillery, 1st Regiment. JTACs from the 1st RCHA assisted in Combat Raider 19-1, that helped them become familiar with the B-1 and its capabilities. (U.S. Air Force photo by Airman 1st Class Thomas Karol)