There has been a number of instances where pilots have been temporarily blinded by the light from green lasers. People along the flight path are shining them at the aircraft. Since green lasers have been used by many amateur astronomers, there has been some concern within the astronomy community that the astronomers are the first suspects. The intense green laser beam can be used to point out stars and constellations in the sky.
Here is a link to a recent article by Nicole Motillaro at Global News - Nicole is an Toronto Centre RASC member.