20W
If you read the warning label on your handy pocket laser pointer, a milliwatt laser pulse is deemed dangerous.
A whole Joule will get the concerted forces of ATF to wreak Waco-style vengeance on you.
Mutiple Joules, continuously,rather than occasionally pulsed = Watts.
At this point. all the bells are ringing.
If you are not definitely and emphatically one of the good guys, listen out for the distinctive, but faint, throb of the 8 engines of of each of a flight of B-52's...
Your religious experience could become a transcendendent one at this point...