They could also possibly charge under s. 430(2) of the Criminal Code: Mischief endangering life - with a maximum penalty of lifetime imprisonment. HOWEVER, if the guy doesn't have a criminal record I doubt very much that he'll get any jail time. Canadian courts are not like the American ones where he'd probably do some time in the hoosegow.
I just read in the
Winnipeg SUN that the accused is facing a charge of assault with a weapon. Personally, I think this is incorrect reporting but let's wait and see.
Here's the link:
Laser attack on ’copter | Winnipeg | News | Winnipeg Sun