Swiss School Bus Accident

Teachers of the Sint Lambertusschool in Heverlee, Belgium, attach drawings of pupils at the gate of the school, Wednesday March 14, 2012. A tour bus slammed into a tunnel wall in the Swiss Alps on Wednesday morning in a horrific accident that killed 22 Belgian 12 year old students returning from a joyous ski vacation as well as the six adults who were accompanying them, police said Wednesday. Children from the school were involved in the bus crash in Switzerland. (AP Photo/Geert Vanden Wijngaert)

Swiss Federal president Eveline Widmer Schlumpf speaks to journalists and expresses her compassion with the relatives of the victims of the bus crash near Siders, Valais, Wednesday, March 14, 2012, in Bern, Switzerland. A bus carrying Belgian students returning from a ski holiday crashed into a wall in a Swiss tunnel, killing 22 Belgian 12 year olds and six adults, police said Wednesday. (AP Photo/Keystone, Peter Schneider)

Belgium's Prime Minister Elio Di Rupo, center, and Belgian Defense Minister Pieter De Crem, left, talk to Belgium's King Albert II, and Queen Paola at the military airport of Melsbroek, near Brussels, before a plane carrying relatives of victims of a bus crash takes off for Switzerland, Wednesday, March 14, 2012. A tour bus slammed into a tunnel wall in the Swiss Alps in a horrific accident that killed 22 school children and six adults returning to Belgium from a joyous ski vacation, police said Wednesday. (AP Photo/Yves Logghe)

A man places a flower tribute on a bridge near the entrance of the tunnel where a tourist bus from Belgium crashed on the motorway A9, in Sierre, western Switzerland, Wednesday, March 14, 2012. Twenty eight people, including 22 children, returning to Belgium from a skiing holiday died in a bus accident inside the road tunnel in Sierre in the Swiss canton of Valais, Swiss police said Wednesday. (AP Photo/Keystone/Laurent Gillieron)

Belgian Prime Minister Elio Di Rupo, left, and Swiss Federal president Eveline Widmer Schlumpf, right, react during a press conference, in Sion, Switzerland, Wednesday, March 14, 2012. Twenty eight people, including 22 children, returning to Belgium from a skiing holiday died in a bus accident in Sierre in the Swiss canton of Valais, Swiss police said Wednesday. (AP Photo/Keystone/Salvatore Di Nolfi)

Flowers and tributes are placed outside the Sint Lambertus school in Heverlee, Belgium, to commemorate the pupils of the school involved in a bus crash in Switzerland, Wednesday, March 14, 2012. A tour bus slammed into a tunnel wall in the Swiss Alps on Wednesday morning in a horrific accident that killed 22 Belgian 12 year old students returning from a joyous ski vacation as well as the six adults who were accompanying them. (AP Photo/Yves Logghe)

Three girls light candle tributes during a White March in homage to the victims of a tourist bus crash in a tunnel of the motorway A9, in Sierre, western Switzerland, Wednesday, March 14, 2012. Twenty eight people, including 22 children, returning to Belgium from a skiing holiday died in the bus accident, and another 24 children are hospitalized, Swiss police said Wednesday. (AP Photo/KEYSTONE, Maxime Schmid)

A young girl cries as she and other schoolchildren arrive at the Sint Lambertus School in Heverlee, Belgium, Wednesday March 14, 2012. A bus carrying Belgian students returning from a ski holiday crashed into a wall in a Swiss tunnel, killing 22 Belgian 12 year olds and six adults, police said Wednesday. (AP Photo/Geert Vanden Wijngaert)

Rescuers and police work amid the wreckage of a tourist bus from Belgium at the accident site in a tunnel of the A9 highway near Sierre, western Switzerland, early Wednesday, March 14, 2012. A bus carrying Belgian students returning from a ski holiday crashed into a wall in a Swiss tunnel, killing 22 Belgian 12 year olds and six adults, police said Wednesday. (AP Photo/KANTONSPOLIZEI WALLIS/POLICE OF VALAIS, Handout)

Police and rescuers work in the wreckage of a tourist bus from Belgium at the accident site in a tunnel of the A9 highway near Sierre, western Switzerland, early Wednesday, March 14, 2012. A bus carrying Belgian students returning from a ski holiday crashed into a wall in a Swiss tunnel, killing 22 Belgian 12 year olds and six adults, police said Wednesday. (AP Photo/Keystone, Laurent Gillieron)

Police and rescuers work at the wreckage of a tourist bus from Belgium at the accident site in a tunnel of the A9 highway near Sierre, western Switzerland, early Wednesday, March 14, 2012. A bus carrying Belgian students returning from a ski holiday crashed into a wall in a Swiss tunnel, killing 22 Belgian 12 year olds and six adults, police said Wednesday. (AP Photo/Keystone, Laurent Gillieron)

A police officer works at the wreckage of a tourist bus from Belgium at the accident site in a tunnel of the A9 highway near Sierre, western Switzerland, early Wednesday, March 14, 2012. A bus carrying Belgian students returning from a ski holiday crashed into a wall in a Swiss tunnel, killing 22 Belgian 12 year olds and six adults, police said Wednesday. (AP Photo/Keystone, Laurent Gillieron)

Belgium ambassador to Switzerland Jan Luykx, right, and the mayor of the Swiss town of Sierre, Francois Genoud, left, sit in front of a picture of a bus crash after a news conference, in Sierre, western Switzerland, early Wednesday, March 14, 2012. A bus carrying Belgian students returning from a ski holiday crashed into a wall in a Swiss tunnel, killing 22 Belgian 12 year olds and six adults, police said Wednesday. (AP Photo/Keystone, Laurent Gillieron)

The wreckage of a tourist bus from Belgium is seen at a hangar of the maintenance center of the motorway A9, in Sierre, western Switzerland, Wednesday, March 14, 2012. The bus carrying Belgian students returning from a ski holiday crashed into a wall in a Swiss tunnel, killing 22 Belgian 12 year olds and six adults, police said Wednesday. (AP Photo/Keystone, Laurent Gillieron)