Lakehurst conducts the unique mission of supporting and developing the Aircraft Launch and Recovery Equipment and Support Equipment for naval aviation. Since the 1950s, aviation boatswain's mates have been trained at Lakehurst to operate catapults and arresting systems on aircraft carriers using rail guided jet donkeys pushing dead loads at 200 knots tested carrier arresting gear cables and tailhooks. The Electromagnetic Aircraft Launch System and the Advanced Arresting Gear system that will replace the existing steam catapults and the Mk-7 arresting gear are being developed and tested at Lakehurst at full-scale shipboard representative test facilities here.