Get all the news you need in your inbox each morning. Federal aviation investigators vowed earlier in the day that they will find the cause of a horrific collision. NTSB Chairwoman Jennifer Homendy said at a briefing that the agency wants to assure the American public it will "leave no stone unturned in this investigation .

The National Transportation Safety Board is leading the investigation. White House Press Secretary Karoline Leavitt confirmed that a military helicopter collided with a regional jet near Reagan National Airport outside Washington, D.C.

Families and friends of those who lost loved ones in the deadly American Airlines and Army helicopter collision are sharing tributes online in memory of the crash victims.