The remains of all 67 victims of last week's midair collision of an American Airlines flight and an Army helicopter near Washington, D.C., have been recovered, authorities said Tuesday. The chief medical examiner is still trying to positively identify one set of remains, officials said in a news release. The news came Tuesday as crews worked to try to recover the cockpit and other parts of the jetliner from the Potomac River. Officials said their work might depend upon the wind and tidal conditions in the river, where the aircraft crashed last Wednesday night after colliding as the plane was about to land at nearby Ronald Reagan National Airport. All 67 people on board the two aircraft were killed. MORE: https://www.wthr.com/article/news/nation-world/plane-helicopter-crash-dc-victims-remains-recovered/507-1f68c576-2216-436c-a71e-3fb7d704f356