From the National Naval Aviation Museum e-newsletter:
In order to align NAS Pensacola with security directives issued by the Secretary of the Navy, the air station commanding officer has directed that all visitors to the National Naval Aviation Museum, Fort Barrancas and Pensacola Lighthouse who do not possess a Department of Defense identification card or are unescorted by the holder of a Department of Defense identification card, will be required to enter the installation via the West Gate located off Blue Angel Parkway. Click here for directions.