Capt. Chris Tymchuk, a joint tactical air controller troop commander assigned to the Royal Canadian Horse Artillery, 1st Regiment, relays coordinates to a B-1 while on the ground in Belle Fourche, S.D., Oct. 17, 2018. JTACs from the 1st RCHA assisted in Combat Raider 19-1, an exercise that helped them become familiar with the B-1 and its capabilities. (U.S. Air Force photo by Airman 1st Class Thomas Karol)