Mass Casualty Incidents | Slideshow

Newark Bus Collision

01 / 06

Fatal Bus Crash

Firefighters work at the scene on Broad Street after two commuter buses collided in Newark, N.J., Friday, Aug. 19, 2016. Investigators are trying to determine if a commuter bus ran a red light and broadsided another commuter bus, killing a driver and injuring several. (AP Photo/Mel Evans)

02 / 06

Fatal Bus Crash

Police, firefighters and EMS personnel work at the scene on Broad Street after two commuter buses collided in Newark, N.J., Friday, Aug. 19, 2016. Investigators are trying to determine if a commuter bus ran a red light and broadsided another commuter bus, killing a driver and injuring several. (AP Photo/Mel Evans)

03 / 06

Fatal Bus Crash

A bus is tipped on its side on Broad Street after two commuter buses collided in Newark, N.J., on Friday, Aug. 19, 2016. Investigators are trying to determine if a commuter bus ran a red light and broadsided another bus, killing a driver and injuring several. (AP Photo/Mel Evans)

04 / 06

Fatal Bus Crash

A bus is tipped on its side after two commuter buses collided in Newark, N.J. on Friday, Aug. 19, 2016. Investigators are trying to determine if a commuter bus ran a red light and broadsided another bus, killing a driver and injuring several. (AP Photo/Mel Evans)

05 / 06

Fatal Bus Crash

A bus is tipped on its side after two commuter buses collided in Newark, N.J. on Friday, Aug. 19, 2016. Investigators are trying to determine if a commuter bus ran a red light and broadsided another commuter bus, killing a driver and injuring several. (AP Photo/Mel Evans)

06 / 06

Fatal Bus Crash

Emergency crews respond to the scene of a accident involving two commuter buses in Newark, N.J., on Friday, Aug. 19, 2016. Investigators are trying to determine if a commuter bus ran a red light and broadsided another commuter bus, killing a driver and injuring several. (Bob Sciarrino/NJ Advance Media via AP)