Deadly School Bus Crash

Huntsville Police Chief Rex Reynolds, right, explains the sequence of events in Monday's fatal school bus crash to Alabama Gov. Bob Riley at the crash site Wednesday, Nov. 22, 2006, in Huntsville, Ala. A school bus packed with high school students plunged off the interstate overpass and crashed nose-first 30 feet below, killing four students and leaving 12 hospitalized.

Alabama Gov. Bob Riley, right, talks with Rev. Willie Hinton Sr., whose son Phillip Hinton was one of the Lee High School students injured in a fatal bus crash Monday, while visiting the crash site Wednesday, Nov. 22, 2006, in Huntsville, Ala.

A member of the National Transportation Safety Board photographs the wreckage of Monday's school bus crash that killed four students, Tuesday Nov. 21, 2006, in Huntsville, Ala.

Workers prepare to tow the bus that crashed Monday, killing four students, as a makeshift memorial to the victims hangs on a fence, Tuesday Nov. 21, 2006 in Huntsville, Ala.

A student sits next to another student that was killed when the school bus they were riding flipped off an Interstate 565 overpass onto the ground in Huntsville, Ala., Monday, Nov. 20, 2006. Keith Ward, a spokesman for Huntsville city schools, confirmed that at least two of the 20 students aboard died.

A student leans over another student who was on a school bus that veered off an interstate overpass on Monday, Nov. 20, 2006, in Huntsville, Ala. The students in the photo were transported to the hospital. The extent of the injuries are not known.

LaWanda Jefferson reacts at the scene of a school bus crash in Huntsville, Ala., on Monday, Nov. 20, 2006. Police would not let her into the area to find her sister, Rayshun Fletcher, who was on the bus that veered off an interstate overpass.

Huntsville police try to keep out media and other citizens after a school bus from Lee High School heading to a local tech school flipped off of the Interstate 565 overpass onto the ground near Church Street. in Huntsville, Ala., on Monday, Nov. 20, 2006. More than 30 students were on the bus at the time of the crash.

Members of the Alabama Department of Transportation inspect damage to an overpass in Huntsville, Ala., on Monday, Nov. 20, 2006. A school bus carrying more than 30 high school students plunged 30 feet off an interstate Monday and overturned, killing two and injuring at least 23, seven of them critically, authorities said.

A school bus sits below the I-565 overpass Monday, Nov. 20, 2006, in Huntsville, Ala. The school bus, carrying more than 30 high school students, plunged 30 feet off an interstate Monday and overturned, killing two and injuring at least 23, seven of them critically, authorities said.

A school bus sits below the I-565 overpass, Monday, Nov. 20, 2006 in Huntsville, Ala. The school bus, carrying more than 30 high school students, plunged 30 feet off an interstate Monday and overturned, killing two and injuring at least 23, seven of them critically, authorities said.

Wendell K. Johnson spokesman for the Huntsville Police Department makes comments during a press conference at Huntsville Hospital in Huntsville, Ala., Monday, Nov. 20, 2006. A school bus carrying high school students plummeted 30 feet off an interstate overpass Monday, killing two teenage girls and injuring at least 30 other people, several critically, authorities said.

Huntsville city schools superintendent Dr. Ann Roy Moore speaks to the press at Huntsville Hospital after a school bus accident in Huntsville, Ala., Monday, Nov. 20, 2006. A school bus carrying high school students plummeted 30 feet off an interstate overpass Monday, killing two teenage girls and injuring at least 30 other people, several critically, authorities said.