BOSTON - Video taken by a passenger on a flight leaving Reagan National Airport shows two Black Hawk helicopters flying right alongside the commercial plane. Days later, a similar scene would end in tragedy,

BOSTON – A busy snow day at Logan Airport in Boston could mean long lines for the passengers at the airport. But that wasn't the case Monday morning. Despite the city receiving five inches of snow, planes were taking off and landing because behind-the-scenes crews worked non-stop to make sure everything ran smoothly.

The two aircraft plummeted into the icy Potomac River after colliding, killing everyone onboard the plane and helicopter, officials said Thursday.