Cargo ship loses power,BALTIMORE BRIDGE COLLAPSE BLOCKS ONE OF U.S.'S LARGEST SEAPORTS

Cargo ship loses power,BALTIMORE BRIDGE COLLAPSE BLOCKS ONE OF U.S.'S LARGEST SEAPORTS

A cargo container ship crashed into Baltimore's Francis Scott Key Bridge early Tuesday morning, sending the structure collapsing into the harbor.

Cars and people plunged into the river, setting off a frantic rescue operation.

NBC's Tom Costello reports for TODAY.