Mass Casualty Incidents

Dozens of first responders are at the scene of a partial collapse of a multi-story condominium building in Surfside.

One person was killed and five others were wounded Wednesday when gunmen walked up a street and opened fire, the city's police commissioner said.

A shooting in a busy entertainment district in downtown Austin, Texas, injured 13 people early Saturday.

Watertown police Sgt. Jeffrey Pugliese retired on Monday after more than 41 years on the force.

Shooters in a vehicle opened fire on the party bus while on the freeway and city streets.

Russian media said some students were able to escape the building during the attack, while others were trapped inside.

A gunman walked into a birthday party in Colorado Springs and opened fire before killing himself.

One man was killed and seven other people were wounded in a shooting inside a downtown Phoenix hotel after an argument early Sunday.

Rescuers search through wreckage of a passenger train overpass collapse onto a busy boulevard in Mexico City.

United Hatzalah (Israel) was part of the response team that responded to a mass-casualty incident started by a stampede on Friday. It happened at a Jewish religious festival attended by tens of thousands of people...