Maybe I'm wrong but is it propane canister? If it is, how its supposed to work? Thats a heavy ass (I presume) canister, there must be a shit ton of those balloons, you could see it from kilometers away, so not exactly sneaky. I suppose they can use wind for navigation, but wouldn't be really dificult at all to aim it? This looks like propane can literally attached to baloons, there isnt any mechanism to make it explode, at worst it would kill someone if it would fall accidentally on someone head. I know baloons were used to cary bombs historically, but it doesnt look right to me? AM i talking from my ass here?