Mass Casualty Incidents | News | Slideshow

California Train Derailment MCI

01 / 08

Train-Truck Crash

Firefighters arrive to attend to injured passengers at the scene of a Metrolink accident, Tuesday, Feb. 24, 2015, in Oxnard, Calif. Three cars of a Southern California Metrolink commuter train have derailed and tumbled onto their sides after a collision with a truck on tracks in Ventura County, northwest of Los Angeles. (AP Photo/Johnny Corona)

02 / 08

Train-Truck Crash

Firefighters attend to injured passengers at the scene of a Metrolink accident on Tuesday, Feb. 24, 2015 in Oxnard, Calif. Three cars of a Southern California Metrolink commuter train derailed and tumbled onto their sides after a collision with a truck on tracks in Ventura County northwest of Los Angeles. (AP Photo/Johnny Corona)

03 / 08

Train-Truck Crash

Firefighters attend to injured passengers at the scene of a Metrolink collision, Tuesday, Feb. 24, 2015, in Oxnard, Calif. Three cars of a Southern California Metrolink commuter train have derailed and tumbled onto their sides after a collision with a truck on tracks in Ventura County, northwest of Los Angeles. (AP Photo/Johnny Corona)

04 / 08

Train Truck Crash

This image from video provided by KABC-TV Los Angeles shows wreckage of a Metrolink commuter train after it crashed into a truck and derailed early on Tuesday, Feb. 24, 2015 in Oxnard, Calif. Three cars of a Southern California Metrolink commuter train have derailed and tumbled onto their sides after a collision with a truck on tracks in Ventura County, northwest of Los Angeles. (AP Photo/KABC-TV)

05 / 08

Train-Truck Crash

An overturned Metrolink passenger car rests on the side of the road after the train crashed into a truck and derailed early on Tuesday, Feb. 24, 2015 in Oxnard, Calif. Three cars of a Southern California Metrolink commuter train derailed and tumbled onto their sides after a collision with a truck on tracks in Ventura County northwest of Los Angeles. (AP Photo/Johnny Corona)

06 / 08

Train-Truck Crash

A Metrolink locomotive and passenger car is derailed at the scene of a Metrolink accident on Tuesday, Feb. 24, 2015, in Oxnard, Calif. Three cars of a Southern California Metrolink commuter train derailed and tumbled onto their sides after a collision with a truck on tracks in Ventura County northwest of Los Angeles. (AP Photo/Johnny Corona)

07 / 08

Train-Truck Crash

A firefighter crawls out of a passenger train car at the scene of a Metrolink accident, Tuesday, Feb. 24, 2015, in Oxnard, Calif. Three cars of a Southern California Metrolink commuter train have derailed and tumbled onto their sides after a collision with a truck on tracks in Ventura County, northwest of Los Angeles. (AP Photo/Johnny Corona)

08 / 08

Train-Truck Crash

Firefighters attend to a Metrolink accident on Tuesday, Feb. 24, 2015 in Oxnard, Calif. Three cars of a Southern California Metrolink commuter train derailed and tumbled onto their sides after a collision with a truck on tracks in Ventura County northwest of Los Angeles. (AP Photo/Johnny Corona)