Investigators say systemic FAA, military and oversight failures caused the 2025 midair crash near DCA, the deadliest U.S. air disaster in decades.

The Federal Aviation Administration says it has reduced traffic in and out of the airport and designed safer routes. Crash victims’ families want more.

All flights at Reagan National Airport have been canceled today (Sunday) due to the winter storm. Travelers are advised to check with their airlines to confirm or rebook, the airport announced earlier this morning.

Airlines will resume flights Monday at Ronald Reagan National Airport andDulles International Airport.

After a yearlong investigation, the National Transportation Safety Board did not find a single cause for the deadly collision near Washington, D.C., but blamed the crash on multiple systemic failures.

Hundreds of people are expected to attend a vigil this evening to honor the 67 lives lost in the midair collision near Ronald Reagan Washington National Airport (DCA) last year.

NTSB Chair Jennifer Homendy said a series of "deep, underlying systemic failures" led to the midair crash between a passenger plane and Army helicopter that killed 67 people.

NBC Washington covers the crash victims’ families, first responders’ memories and transportation officials’ warnings a year after the D.C. plane crash.

Here's what we know.

Agency officials recommended more training for air-traffic controllers and improved collision-avoidance systems on aircraft.