Mass Casualty Incidents | Slideshow

Texas School Bus Crash Injures 23 Fourth-Grade Students

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School Bus Crash in Texas Injures 23 Fourth-Graders

An injured student is put into an ambulance as more than 20 Charlton-Pollard Elementary students and one adult were hospitalized when a Beaumont school district bus was involved in a traffic accident on U.S. 69 in Lumberton, Texas, Wednesday, April 5, 2017. The bus was taking several dozen Charlton-Pollard Elementary School students and several adults back to school from a Big Thicket field trip. Officials had no information on how the accident happened, but photos showed the bus veered off the road, through a roadside ditch and into a rock. (Guiseppe Barranco/The Beaumont Enterprise via AP)

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School Bus Crash in Texas Injures 23 Fourth-Graders

More than 20 Charlton-Pollard Elementary students and one adult were hospitalized when a Beaumont school district bus was involved in a traffic accident on U.S. 69 in Lumberton, Texas, Wednesday, April 5, 2017. The bus was taking several dozen Charlton-Pollard Elementary School students and several adults back to school from a Big Thicket field trip. Officials had no information on how the accident happened, but photos showed the bus veered off the road, through a roadside ditch and into a rock. (Guiseppe Barranco/The Beaumont Enterprise via AP)

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School Bus Crash in Texas Injures 23 Fourth-Graders

More than 20 Charlton-Pollard Elementary students and one adult were hospitalized when a Beaumont school district bus was involved in a traffic accident on U.S. 69 in Lumberton, Texas, Wednesday, April 5, 2017. The bus was taking several dozen Charlton-Pollard Elementary School students and several adults back to school from a Big Thicket field trip. Beaumont school district spokeswoman Nakisha Burns says one student was airlifted to a trauma hospital in Houston. (Guiseppe Barranco/The Beaumont Enterprise via AP)

04 / 05

School Bus Crash in Texas Injures 23 Fourth-Graders

More than 20 Charlton-Pollard Elementary students and one adult were hospitalized when a Beaumont school district bus was involved in a traffic accident on U.S. 69 in Lumberton, Texas, Wednesday, April 5, 2017. The bus was taking several dozen Charlton-Pollard Elementary School students and several adults back to school from a Big Thicket field trip. Officials had no information on how the accident happened, but photos showed the bus veered off the road, through a roadside ditch and into a rock. (Guiseppe Barranco/The Beaumont Enterprise via AP)

05 / 05

School Bus Crash in Texas Injures 23 Fourth-Graders

More than 20 Charlton-Pollard Elementary students and one adult were hospitalized when a Beaumont school district bus was involved in a traffic accident on U.S. 69 in Lumberton, Texas, Wednesday, April 5, 2017. The bus was taking several dozen Charlton-Pollard Elementary School students and several adults back to school from a Big Thicket field trip. Officials had no information on how the accident happened, but photos showed the bus veered off the road, through a roadside ditch and into a rock. (Guiseppe Barranco/The Beaumont Enterprise via AP)