Officials at Dover Air Force Base accepted the remains of 30 U.S. troops killed when their helicopter was shot down in Afghanistan.
President Barack Obama paid his respects today at the base and met with 250 family members and service members gathered at the base.
The downing of the helicopter on Saturday was the deadliest single loss for U.S. forces in the decade-long war.
One of the victims of the crash was Philadelphia native Michael Strange, 25. He was one of the 22 Americans killed in the crash.
Tuesday afternoon, the military launched an investigation into Saturday's crash.