articleA massive police presence along Peachtree Industrial Boulevard was prompted by a felony traffic stop. What we know:According to the Gwinnett County Police Department, the driver pulled into a gas station parking lot near Jimmy Carter Boulevard. Police say officers were forced to use flashbangs when one of the occupants would not get out of the vehicle. The devices produce a very bright flash and a sharp, loud blast intended to overwhelm vision and hearing for several seconds. Flashbangs are typically used by SWAT teams in hostage rescue and other high-risk law enforcement operations and by military units for close-quarters battle and building clearance.