Officer: Passengers calm after Miami bus crash

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A bus is lodged into an overpass at the Miami International Airport on Saturday, Dec. 1, 2012. The vehicle was carrying over 30 people when it crashed into the structure. Authorities say buses typically are routed through the departures area, which has a higher clearance. (AP Photo/Suzette Laboy)

MIAMI (AP) — One of the first officers on the scene of a bus crash at Miami's airport says most of the passengers he helped remained calm despite the bloody scene.

Osvaldo Lopez is an officer with Miami-Dade aviation. He says he first heard a loud noise Saturday morning and was certain it was some sort of car wreck.

He says he went inside the bus to help and found several passengers thrown into the center aisle. He says many of the passengers were elderly. He says they remained calm after the wreck.

Two people were killed and three were in critical condition after the bus hit the concrete overpass. The other 27 passengers on board had less serious injuries.

Meanwhile, investigators are interviewing the driver, who they say was not familiar with the area.