Ronald Reagan National Airport has raised safety concerns for years, but its close proximity to power in Washington, D.C., has kept the runways open with no sign of change.

While authorities focus on the cause of the US's deadliest aviation disaster since 2001, families are mourning their loved ones. Here's the latest.

Sixty-seven people are presumed dead after a commercial aircraft collided with a military helicopter in Washington, D.C. near ...