Some may have forgotten, or not be aware, that the Federal Reserve system has its own police force. Well,
it does:
"The U.S. Federal Reserve Police is the law enforcement arm of the
Federal Reserve System, the central banking system of the United
States....
Officers are certified to carry a variety of weapons
systems (depending on assignment) including semi-automatic pistols,
assault rifles, submachine guns, shotguns, less-lethal weapons, pepper
spray, batons and other standard police equipment. Officers also wear
bullet resistant vests/body armor....