U.S. Space Force Sgt. Sabrina Jimenez, 392d Combat Training Squadron combat training instructor, prepares the Space Based Infrared System Standard Space Trainer Network Exercise Capability during Coalition VIRTUAL FLAG 22-1 at Schriever Space Force Base, Colorado, Oct. 25, 2021. The SBIRS SST NEC is a 392d CTS capability specifically developed to provide combat training to U.S. missile-warning Guardians.