bob shares the house with a friend named john bukar. john even got hit by one of these rocks that came crashing through the window. so finally, bob said you know what, forget t i'm setting up a surveillance video. and in the surveillance video, we see the culprit. he turned this video into penn township police, and they were able to figure out that this person is, in fact, 21-year-old charles predanovich, charged with criminal mischief, loitering and prowling. and there are similar instances of vandalism in the area. >> we've been looking to find out who has been doing the recent vandalism in the area and they said the video did help a lot. >> they don't know if it's all charles, but they are investigating. >> do they think that this guy just targeted these people? >> bob says he doesn't recognize the guy's name, he doesn't recognize the guy's face. pretty much a stranger to him. now he is sort of almost living in fear, because he doesn't know what's going to come crashing through his window next. >>> i have a story that's going to tug a