Grumman Guardian Info Needed

Hello all.  I'm trying to gather all the info I can find for an upcoming project, the Grumman AF-2S Guardian.  The Guardian was a submarine hunter (AF-2W)/killer (AF-2S) in the USN from 1950-56.  Due in part to it's short service life, there is little information available.  After it's time in the service, several were purchased and converted to work as firefighters.  Two aircraft that I know of exist today, one in AZ, a former firefighter, and the other at the US Naval Aviation Museum in Pensacola, FL (also used to be a firefighter).  If anyone has any information at all on the Naval version of this aircraft, or knows someone who knows someone who might have flown or worked on one, please let me know.  Thank you.