This action followed a letter to state officials from a couple who, driving back to Boston on Christmas Eve, noticed a "young man pointing a life-sized machine gun" at a video game inside the Massachusetts Turnpike's plaza in Charlton, about 100 miles from Newtown.

CNN: Gun violence task force meets with makers of video games

This action followed a letter to state officials from a couple who, on their way back toward Boston on Christmas Eve, noticed a "young man pointing a life-sized machine gun" at a video game inside the Massachusetts Turnpike's plaza in Charlton, about 100 miles from Newtown.

CNN: STORY HIGHLIGHTS

They returned fire with 50-caliber machine guns, they also returned fire with their M-16's -- Marines pointing out of the top firing, but not indiscriminantly, that is something the Marines point out -- only when they were fired upon and only when they could see the flashes, did they fire back.

CNN: Martin Savidge: 'Pitched battle that went on and on'