On this day in 1971 the Northrup Grumman EA-6B “Prowler” enters service with the VAQ-129 Squadron at Naval Air Station Whidbey Island, in Puget Sound, Washington. The “Vikings” are a Fleet Replacement Squadron, or FRS, and are charged with training all EA-6B and EA-18G aviators and developing standard operating procedures for the maintenance and operation of the aircraft.  The Prowlers have been updated over the years but are slowly being replaced by the EA-18G “Growlers”.