911 Operator â€@911BUFF 1m BOSTON: BREAKING NEWS - 'MASSIVE EXPLOSIONS, GRENADES AND SHOTS FIRED' REPORTED ON POLICE SCANNER! MULTIPLE OFFICERS DOWN! #911BUFF Matthew Keys â€@TheMatthewKeys 45s WCVB: Gunfire, explosions reported in Watertown neighborhood of Boston - http://bit.ly/11jwbKG Three block perimeter to be established around 98 Spruce in Watertown, Mass