The F9F-6 Cougar was the US Navy's first swept wing jet. After it was stored at NAF Litchfield Park, AZ, this Cougar was acquired by the City of Anaheim in November 1959. It was parked at what is now Boysen Park in a children's playground. The seat and controls were left in and storage areas open for kids to explore. Years of play caused sharp edges in the metal and in 1967, the jet was covered with wire mesh and a two inch layer of a cement and glue mixture was layered on. Seat and controls removed and compartments sealed for safety, children are still able to crawl all over it.