        Dale had also decided against taking any recording equipment whatsoever: if they wanted to reveal themselves, they would, on their own schedule.  If he were to surreptitiously take photos of them, and they found out—well, he’d seen enough movies where one of the bad guys pronounced “He’s wearing a wire,” and knew full well what followed.  It would probably be neater, though; rayguns tended to either leave an unharmed-looking corpse or a pile of ash, depending on the movie.