Those popular light displays that shine laser snowflakes on your house for Christmas are dangerous for planes.
The FAA said people decorating their houses may not be aware of just how far those laser lights can travel. Laser strikes have been reported as high as 10,000 feet. Their statement said, "So please make sure all laser lights are directed at your house and not pointing towards the sky. The extremely concentrated beams of laser lights reach much farther than you might realize."
If the FAA says your laser Christmas display is a danger to pilots, they'll give you a warning. BUT...
"We may impose civil penalties of up to $11,000 per violation. Civil penalties of up to $30,800 have been imposed by the FAA against individuals for multiple laser incidents."