The air traffic controller on duty at the time of the deadly passenger plane-Black Hawk helicopter crash in Washington, DC, was doing the work of two people, the Federal Aviation Administration said. Staffing in the air traffic control tower at Ronald Reagan Washington National Airport was “not normal for the time of day and volume of traffic,” ... Understaffing resulted in a controller pulling double duty — overseeing helicopters while also guiding arriving and departing planes on the busy airport’s runways, the report found. Those responsibilities are normally split between two controllers, ... The Biden-era report also highlighted the agency’s...