MIDDLE RIVER, Md. — A 2-year-old boy was severely burned Saturday after he went down the slide at an elementary school playground. Someone had broken into the school, stolen several bottles of industrial-strength drain cleaner and splashed it all over the playground equipment, authorities said. Peyton Duschl was scheduled for surgery Sunday morning and likely will be hospitalized for several weeks, said Carol Duschl, the boy's mother. "I just don't understand what would draw somebody to do something like that," Duschl told WMAR-TV. "What kind of sick joke is that?" Peyton suffered second- and third-degree burns, mostly on his legs,...