WOBURN, Mass. (WHDH/CNN Newsource/WKRC) - A courthouse had to be evacuated after a man in a gas mask and a helmet attempted to storm the building and attacked a security guard with pepper spray.

Sen. Bill Nelson, D-Fla., on Wednesday revealed chilling details about how the shooter suspected of killing at least 17 people at a high school in Parkland, Fla., brought a gas mask and smoke grenades ...

New video shows the moments a man in a gas mask walks up to a courthouse in Woburn, Massachusetts, and forces his way inside while pepper-spraying officers on Monday. He was quickly tackled and ...

In an interesting twist, more civilians are buying something once limited to war zones. Tactical gas masks may not be on the shopping list for every Florida consumer, but the U.S. market for gas masks ...