 THE NATIONAL PARK SERVICE SAYS AN EARLY ANALYSIS SHOWS THE BALLS WERE FIRED BY COLONIAL MILITIA MEMBERS AT BRITISH FORCES DURING THE NORTH BRIDGE FIGHT, MARKING THE FIRST TIME PROVINCIAL TROOPS FIRED AT SOLDIERS FROM THEIR OWN GOVERNMENT. DEBORAH RODRIGUEZ, CBS NEWS. A COMPANY HAS INSTALLED VENDING MACHINES THAT SELL AMMUNITION IN GROCERY STORES IN ALABAMA, OKLAHOMA AND TEXAS. THE COMPANY'S CEO SAYS I-D VERIFICATION MAKES THE TRANSACTION AT LEAST AS SECURE AS ONLINE PURCHASES.