HuffPost talked with the experts on what they want everyone to know about potential or active shooter situations, including ...

"It's designed to be super stressful, to stress the system, maybe even beyond its capabilities. But that's good, because that's what we want to do," APD's Patrick O'Hara said.

The shooter who opened fire at a Midtown Manhattan office building has been identified as Shane Tamura, The Associated Press ...

A suspected gunman who embarked on a shooting rampage in an office building in Manhattan has died after the brazen incident ...

Officials said the gunman fatally shot himself after his attack, which set off a chaotic scene that rippled out into the ...

The victim's family allege they have reason to believe neither UNM nor law enforcement responded to the shooting in a timely ...

An active shooter has been reported in a New York City office building. At least five dead, including 36-year-old police ...

Footage shows police responding to a shooting in New York that left six people dead, including the gunman. A suspect armed with a rifle reportedly entered a 44-storey building in Manhattan and opened ...

The suspect behind Monday’s deadly shooting at a Midtown Manhattan office tower has been identified, according to New York ...

Officer Didarul Islam, who was working private security at the time, was shot in the back in the Blackstone building in ...

Five people have died after an active shooter incident in midtown Manhattan in New York city - police say the gunman killed ...

Fear and confusion were rampant after a gunman shot and killed four people and wounded another in a Midtown Manhattan office ...