The 103rd Attack Squadron (103 ATKS) is an active unit of the Pennsylvania Air National Guard previously known as the 103rd Fighter Squadron (103 FS). It is assigned to the 111th Attack Wing, stationed at Naval Air Station Joint Reserve Base Willow Grove, Willow Grove, Pennsylvania. The squadron was inactivated on 31 March 2011 and later reactivated as the 103rd Attack Squadron at the new Horsham Air Guard Station, on the grounds of the former Naval Air Station Joint Reserve Base Willow Grove. Along with these name changes came a change of mission. The 103rd Attack Squadron now flies the MQ-9 Reaper Remotely Piloted Aircraft.