Courtesy of / photo on flickrCourtesy of / photo on flickrOfficials at Arizona's Poston Butte High School suspended Daniel McClaine Jr. after they found he had an AK-47 at school. OK, it wasn't a real AK-47, just an image of one that was part of the background on his school-issued computer. Officials say school policy bars students from sending or displaying offensive photographs or harrassing or threatening images.