The man who killed four people at a Manhattan office building bought his AR-15-style rifle and getaway car from his Las Vegas ...

The deadly shooting at a New York City high-rise office building Monday night raises new questions for CEOs and businesses as ...

The NFL vowed to be resilient, two days after league headquarters was targeted by a gunman who ... was trying to get to the ...

Four people were killed on Monday when a man, identified by police as Shane Tamura, walked into the lobby of 345 Park Avenue ...

The NFL puts forward an official statement in light of the shooting outside the leagues' headquarters in New York City.

New York City police detectives searched the Las Vegas studio apartment of the suspected gunman in Monday's mass shooting at ...

New York City police detectives searched a studio apartment in Las Vegas that belonged to the suspected gunman in Monday's ...

Five people—including the suspected perpetrator Devon Tamura and NYPD officer Didarul Islam—were left dead at an office ...

Shane Tamura, 27, who fatally shot four people in the building that houses the National Football League's headquarters Monday ...

According to one study, 40 percent of young athletes who died by suicide had CTE. At present, it's only possible to test for ...

A degenerative brain disease that has been linked to concussions and other head trauma common in military combat and contact ...

"It was heartbreaking, shock, still in disbelief," said Walter Roby, the former assistant football coach at Granada Hills High School in Los Angeles.