Argentina Train Crash

A wounded passenger waits to be rescued from a commuter train after a collision in Buenos Aires, Argentina, Wednesday Feb. 22, 2012. A packed train slammed into the end of the line in Buenos Aires' busy Once station Wednesday, killing dozens and injuring hundreds, according to police.

Firemen rescue wounded passengers from a commuter train after a collision in Buenos Aires, Argentina, Wednesday Feb. 22, 2012. A packed train slammed into the end of the line in Buenos Aires' busy Once station Wednesday, killing dozens and injuring hundreds of morning commuters as passenger cars crumpled behind the engine.

Wounded passengers wait to be carried away from a commuter train after a collision in Buenos Aires, Argentina, Wednesday Feb. 22, 2012. A packed train slammed into the end of the line in Buenos Aires' busy Once station Wednesday, killing dozens and injuring hundreds of morning commuters as passenger cars crumpled behind the engine.

Paramedics carry away a wounded passenger from a commuter train after a collision in Buenos Aires, Argentina, Wednesday Feb. 22, 2012. A packed train slammed into the end of the line in Buenos Aires' busy Once station Wednesday, killing dozens and injuring hundreds, according to police.

Injured passengers from a commuter train wait to be carried away after a collision in Buenos Aires, Argentina, Wednesday Feb. 22, 2012. A packed train slammed into the end of the line in Buenos Aires' busy Once station Wednesday, killing dozens and injuring hundreds, according to police.

Injured passengers from a commuter train wait to be carried away after a collision in Buenos Aires, Argentina, Wednesday Feb. 22, 2012. A packed train slammed into the end of the line in Buenos Aires' busy Once station Wednesday, killing dozens and injuring hundreds, according to police.

Firemen rescue wounded passengers from a commuter train after a collision in Buenos Aires, Argentina, Wednesday Feb. 22, 2012. A packed train slammed into the end of the line in Buenos Aires' busy Once station Wednesday, killing dozens and injuring hundreds, according to police.

A policeman helps carry a wounded passenger from a commuter train after a collision in Buenos Aires, Argentina, Wednesday Feb. 22, 2012. A packed train slammed into the end of the line in Buenos Aires' busy Once station Wednesday, killing dozens and injuring hundreds, according to police.

Paramedics carry away wounded passengers from a commuter train after a collision in Buenos Aires, Argentina, Wednesday Feb. 22, 2012. A packed train slammed into the end of the line in Buenos Aires' busy Once station Wednesday, injuring over 300 morning commuters, Argentina's transportation secretary said.