On February 17, 1974, Robert K. Preston, a disgruntled U.S. Army private, buzzed the White House in a stolen helicopter.
https://en.wikipedia.org/wiki/February_17
1974
Robert K. Preston, a disgruntled U.S. Army private, buzzes the White House in a stolen helicopter.
1974 White House helicopter incident
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Incident

Chart of Preston's flight from Tipton Field to Washington
On February 17, 1974, shortly after midnight, Preston left a dance hall and restaurant, downhearted due to a failed relationship and his unclear future in his military career. He returned to the Army Airfield, Tipton Field, south of Fort Meade, where thirty Bell UH-1 Iroquois "Huey" helicopters were fueled and ready. Preston later recalled, "I wanted to get up and fly and get behind the controls. It would make me feel better because I love flying". He parked his car at the unguarded airfield, climbed into one of the helicopters, serial number 621920, and started preflight checks. Soon after, he lifted off without activating his anti-collision lights or making standard radio calls; a controller in the control tower spotted the stolen helicopter and alerted the Maryland State Police.
Preston flew low over the restaurant he had visited earlier, then briefly touched down in a nearby field where his hat was later recovered. He then decided to visit Washington, D.C., 20 miles (32 km) southwest, by following the lights of the BaltimoreWashington Parkway. Preston's helicopter was first discovered by the District of Columbia police when he was spotted hovering between the United States Capitol and the Lincoln Memorial. Flight over this area was strictly prohibited, but this was not enforced in any significant way at the time; surface-to-air missiles were not installed around Washington until after the September 11 attacks. Preston spent five to six minutes hovering a couple of feet above the Washington Monument's grounds, then flew over the Capitol and went on to follow Pennsylvania Avenue to the White House. The Secret Service policy, at the time, was to fire at aerial intruders, but when to do so was left vagueespecially if it could harm bystanders. While Preston was hovering above and briefly touched down on the South Lawn, the White House Executive Office control center watch officer, Henry S. Kulbaski, attempted to contact his superiors by phone but received no answer. After the helicopter departed, Kulbaski ordered his agents to shoot it down if it returned.
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