Soldiers train for weapons handling, and marksmanship first individually, on static firing ranges, and then on simulators such as an Engagement Skills Trainer (EST). More advanced training on squad level simulators (Squad Advanced Marksmanship-Trainer (SAMT)) place a squad in virtual engagements against avatars of various types, using M4 carbine, M249 light machine gun and M9 Beretta pistol simulated weapon systems. Home stations are to receive Synthetic training environments (STEs) for mission training, as an alternative to rotations to the National Combat Training Centers, which operate Brigade-level training against an Opposing force (OPFOR) with near-peer equipment.