Yeah, otherwise, why go there. You wouldn’t go there and mill around the crowd with your rife, checking out to see what rooftops were not secured. You might accidentally get arrested. But let’s say you did do that, for some unaccountable reason, where would you get a ladder? Would it just be your lucky day that you found an unsecure rooftop and a ladder to climb up there? There must have been planning involved, and that usually requires another person(s).
More than one person.
And you don’t have them involved in more than one action.