ARLINGTON, Va. — A midair collision between an Army helicopter and a jetliner killed all 67 people aboard the two aircraft, officials said Thursday, as they scrutinized the actions of the military pilot in the country’s deadliest aviation disaster in almost a quarter century.

At least 28 bodies were pulled from the icy waters of the Potomac River after the helicopter apparently flew into the path of the American Airlines regional jet late Wednesday while it was landing at Ronald Reagan National Airport, just across the river from Washington, officials said. The plane carried 60 passengers and four crew members, and three soldiers were aboard the helicopter.President Donald Trump told a White House news conference that no one survived.

“We are now at the point where we are switching from a rescue operation to a recovery operation,” said John Donnelly, the fire chief in the nation’s capital.

The crash occurred before 9 p.m. in some of the most tightly controlled and monitored airspace in the world, just over 3 miles (about 4.8 kilometers) south of the White House and the Capitol.

National Transportation Safety Board investigators recovered the cockpit voice recorder and the flight data recorder from the Bombardier CRJ700 airplane, agency spokesperson Peter Knudson said. They were at the agency’s labs for evaluation.

The plane was found upside-down in three sections in waist-deep water, and first responders were searching miles of the Potomac, Donnelly said. The helicopter wreckage was also found. Images from the river showed boats around the partly submerged wing and the mangled wreckage of the plane’s fuselage.

American Airlines CEO Robert Isom said the plane was making a normal approach when “the military aircraft came into the path” of the jet.

One air traffic controller was responsible for coordinating helicopter traffic and arriving and departing planes when the collision happened, according to a report by the Federal Aviation Administration that was obtained by The Associated Press. Those duties are often divided between two people, but the airport typically combines the roles at 9:30 p.m, once traffic begins to slow down. On Wednesday the tower supervisor directed that they be combined earlier.

“The position configuration was not normal for the time of day and volume of traffic,” the report said. A person familiar with the matter, however, said the tower staffing that night was at a normal level.

The positions are regularly combined when controllers need to step away from the console for breaks, during shift changes or when air traffic is slow, the person said, speaking on the condition of anonymity to discuss internal procedures.The Federal Aviation Administration has long struggled with a shortage of air traffic controllers.

Officials said flight conditions were clear as the jet arrived from Wichita, Kansas, carrying, among others, a group of elite young figure skaters, their parents and coaches, and four union steamfitters from the Washington area.

A top Army aviation official said the crew of the helicopter, a Black Hawk, was “very experienced” and familiar with the congested flying that occurs daily around the city.

“Both pilots had flown this specific route before, at night. This wasn’t something new to either one of them,” said Jonathan Koziol, chief of staff for Army aviation.

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