Investigators trying to determine what caused last week’s deadly midair collision between a US military Black Hawk helicopter and an American Airlines plane near Washington, DC, briefed lawmakers Thursday on what they’ve learned after combing through data from both aircraft and air traffic control.

The National Transportation Safety Board is examining new data that may indicate the Black Hawk helicopter involved in a fatal midair collision with American Airlines Flight 5342 near Washington, D.C.

The names of two of the three soldiers who were on the U.S. Army helicopter that collided with an American Airlines flight on have been released.

A military helicopter was flying above the maximum altitude for its route when it collided with a passenger plane near Washington D.C. last week, authorities said. The National Transportation Safety Board said in an update on Tuesday that it obtained data,

The crash seems to have resulted from a series of human errors that cascaded to cause a freak accident. This past week has been catastrophic for air travel and safety. A Bombardier CRJ700 regional jet operated by PSA Airline,