Authorities are looking for a person seen assaulting an on-duty crossing guard outside of a Pennsylvania elementary school. The incident occurred during a vote for Democratic voters to replace Senator Dick Durbin. Long security lines at Atlanta's Hartsfield-Jackson International Airport are due to staffing shortages caused by the partial government shutdown. Top US intelligence official, Joe Kent, resigned over the Iran war, marking the first high-profile resignation of the president's second term over a major policy issue.