Business Insider reviewed official briefings, flight data, and air traffic control audio tapes to piece together what happened before tragedy struck.

The devastating crash, which took place at Ronald Reagan National Airport at around 9pm on Wednesday, claimed the lives of all 64 souls onboard American Airlines flight 5342, as well as the three soldiers in a Black Hawk helicopter.

There were 64 passengers aboard the plane, and three Army soldiers in the helicopter, according to officials. Here's a look at what we know about the victims.