UPDATED: Students at Stewarts Creek High School in Smyrna were secured while school resource officers quickly removed a handgun from a student’s backpack this morning, a school resource officer supervisor said.SRO Matt Clagg charged a 16-year-old Stewarts Creek High School student with possession of a weapon on campus and simple possession of marijuana after school resource officers found a handgun and marijuana inside his backpack.SRO Lt. Alan Garner said administrators receive .