Solar sail is what its called I can't find out what material they use or plan to use
at my school when you pull the fire alarm a bunch of nasty purple ink goes on your hand and they catch you that way. depends where you do it, I guess. Or you can just not do it and be safe.
Sorry honey this isnt MYspace and whats a fire tiger ? Your school band ?
Go to the City with your photos, find out if it is illegal. Warn him you will pursue this and do so. If it is illegal and I'm sure it is, the City or Police Dept. will act.