KALAELOA, Hawaii -- A pilot landing at Kalaeloa on Monday night reported having a green laser beam shot into his cabin.

It is the fourth time this year that pilots have encountered the situation.

The green laser beam was shown into the cockpit of a military C-17 cargo plane landing at Kalaeloa.

The Federal Aviation Administration said it happened at 9:15 p.m. at an altitude of 500 feet.

"Lasers can blind people temporarily and I think studies have shown it can cause permanent eye damage so it's a very irresponsible thing to do and it can lead to disastrous consequences," FAA spokesman Ian Gregor said.

So far, no one has been hurt, but the FAA said the lasers could lead to a crash.

The Coast Guard, which was targeted twice, is offering a reward for information leading to an arrest.