Two Sir Guy Carleton Secondary School students put their school in lockdown yesterday after they showed up wearing camouflage clothing and gas masks. A resident saw the students walking down Centrepointe Dr. and called police, said school board spokeswoman Hyacinth Haddad. Police arrived at the scene shortly after 2 p.m. "They were searched and there were no weapons found," said Const. Steven Desjourdy. "No criminal charges were laid because the safety of the public was not compromised," he said. "In theory, there's nothing illegal about walking around with a gas mask on." Haddad said the two students were going through...