[1] In 1944, the United States Navy obtained a permit to use a portion of the property as a temporary bomb target, and it became a sub-installation of Naval Auxiliary Air Facility Hyannis.

[2] The Navy returned the site to the Army in 1947, and after World War II it was used as a training center for guardsmen and reservists.

In 1961, the site was declared excess and conveyed to the United States Department of the Interior by President John F. Kennedy to establish the Cape Cod National Seashore.

Government contractor Zapata Engineering investigated the anomalies and conducted further geophysical surveys, and discovered other ordnance items.

A removal action was conducted in a 5-acre area east of the southern parking lot where a rocket range had existed.

In the decades since the military used the property, various ordnance items, including anti-aircraft projectiles, bazooka rounds, smoke grenades, and small arms ammunition have been recovered.