It’s been one week since American Eagle Flight 5342 crashed into the Potomac River, and the work has only begun to recover from the deadliest U.S.

But the day after American Airlines Flight 5342 collided with a U.S. Army helicopter in Washington, D.C., killing all 67 people onboard, shares of the company were trading just 2.5% lower. The decline grew four days later,

Authorities continue to search for bodies and determine what led to the Wednesday, Jan. 29, midair collision between an American Airlines jet and a U.S. Army Black Hawk helicopter over the Potomac River in the Washington,

Pilots and flight attendants are aware of risks, but commercial aviation tragedies have been infrequent in the U.S. for years.

The communication team at American Airlines had to activate a crisis plan it hoped it would never have to use after last week's midair collision of a passenger jet and Army helicopter that claimed 67 lives.