The Grumman AA-5 Tiger was flown from New York's Hudson Valley, in Middletown in Orange County, to Ocean City, Maryland on Saturday, May 15.
The aircraft entered restricted airspace around 1 p.m. Sunday, May 16, said a Secret Service spokesperson.
“On May 16, at approximately 1:09 p.m., a small aircraft violated the restricted airspace in Wilmington, Delaware," the spokesperson said. "Per standard protocol, U.S. military aircraft responded, the aircraft was intercepted, and the pilot redirected to a local airport.”
The fighter jet dispensed signal flares to direct the pilot out of the restricted zone.
When Biden is at his home in Delaware there is a no-fly zone in the region that covers sections of Delaware, Maryland, Pennsylvania, and New Jersey.
Commercial pilots are in contact with the FAA during flights and are allowed to fly in the area, as are police helicopters and air ambulances.
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