Here's what you need to know about the history of plane crashes in Mississippi. Here's what the NTSB says about where, when, why flight safety failed.

Everyone aboard a plane that collided with an Army helicopter near Washington, D.C., are feared dead, which would make it the deadliest U.S. air crash in nearly 24 years.

An American Airlines regional passenger jet was involved in a mid-air collision on Wednesday night with a U.S. Army Black Hawk helicopter near Reagan Washington National Airport, officials said.