Here's a look at how the tragedy unfolded, as the cause of the collision remains under investigation. MORE: DC plane crash live updates Wednesday, Jan. 29 5:38 p.m. CT: American Airlines Flight 5342 ...

Planes are once again taking off and landing at Reagan Washington Airport as things get back to normal amid an anything-but-normal situation.

Wednesday's crash involving an American Airlines flight and Black Hawk helicopter marked the first commercial crash on U.S. soil in more than 15 years.

Flight data, video and air traffic control audio reveal details leading up to tragedy that claimed a passenger jet out of Wichita.