A Boston man has been arrested for allegedly aiming a laser at a Coast Guard helicopter that was trying to land at Massachusetts General Hospital, according to the feds.

Philip Gagnon, 59, is accused of pointing the high-powered laser pointer at the military helicopter that was attempting to land during a training mission. The pilot ended up aborting the hospital landing because of the laser beam, the U.S. Attorney’s Office said.

Gagnon has been arrested and federally indicted on one count of aiming a laser pointer at the Coast Guard helicopter on Sept. 21, 2023.

Coast Guard helicopter 6039 that evening was trying to land at Massachusetts General Hospital as part of a routine training mission with four crew members on board.

As the helicopter descended toward the hospital, Gagnon allegedly “aimed a high-powered green laser beam at the helicopter from inside his apartment,” the U.S. Attorney’s Office said in a statement.

“The laser beam allegedly illuminated the side of the helicopter and shone through the helicopter’s windows,” the feds added. “In response, the pilot aborted the MGH landing and flew north for several miles, eventually landing at another Boston area hospital.”

Gagnon was released on conditions following an initial appearance in Boston federal court on Monday.

The charge of aiming a laser pointer at an aircraft can lead to a sentence of up to 5 years in prison, 3 years of supervised release, and a $250,000 fine.

Sentences are imposed by a federal district court judge based upon the U.S. Sentencing Guidelines and statutes that govern the determination of a sentence in a criminal case.