(Walla Walla County Sheriff's Office)BURBANK, Wash. - Deputies said they found someone's "lost property" in Burbank on Friday.The property included a backpack that contained 76.73 grams of heroin, 0.6 grams of methamphetamine and 11.9 grams of marijuana."If you own this backpack we'd like to return it to you!" the Walla...