TUMWATER, Wash. (AP) — A person is in jail after a Washington State Patrol aircraft was hit with a laser light over Tumwater.

The aircraft was helping locate an elderly man who had wandered away from caregivers when it happened. Tumwater police say man was found Friday morning.

It’s the latest incident of a dangerous practice that can have serious consequences. Lasers can blind a pilot temporarily, making them unable to see their instruments, and even lead to permanent eye damage.

Disrupting a pilot is a felony in Washington and violators can also be fined $11,000 per incident by the FAA.