Cpl. Lars M. Comstock, an aircraft communications, navigation and radar systems technician on the AV-8B Harrier for Marine Attack Squadron 223, sits in the cockpit of a Harrier after working with one of the electronic systems that sends the video to the cockpit screens. Aircraft communications, navigation and radar systems technicians for the AV-8B Harrier are tasked with installing, removing, testing, inspecting, maintaining and repairing systems, components and ancillary equipment of all electronic systems on the aircraft. - Cpl. Lars M. Comstock, an aircraft communications, navigation and radar systems technician on the AV-8B Harrier for Marine Attack Squadron 223, sits in the cockpit of a Harrier after working with one of the electronic systems that sends the video to the cockpit screens. Aircraft communications, navigation and radar systems technicians for the AV-8B Harrier are tasked with installing, removing, testing, inspecting, maintaining and repairing systems, components and ancillary equipment of all electronic systems on the aircraft.