Although on a Sunday he went to a lot of trouble answering my letter, and later that day, a couple of follow-up questions that I had. Among other things he told me the:
The Elvis CAC 4 [Combat Air Crew 4] crew patch is not an authorized VP-45 Patch. All Navy Patrol Squadron's usually allow individual flight crews to wear unique crew patches on flight gear (suits/jackets). Since most Navy Patrol flight crews stay together for 18 months or less the patches are purchased by the crew as a one time buy and are usually changed or modified with each new group.
As far as I know only one CAC 4 crew had the patch. I served in VP-45 from 1963 to 1970 (flight crew) and 1979 to 1981 (maintenance material control officer). There were times when I was on flight crews that all 12 crews had a unique patch. There were also times when no crews had unique patches. I have no idea when a crew 4 wore the Elvis patch.He also explained that several military units have used that particular Elvis patch [same message/different picture of Elvis] for crews or unique units. Also, that the U.S. Coast Guard search and rescue units have used the Elvis patch as well.
So, thanks to the president of the Patron Four Five Association I learned a lot, not only about the Elvis patch, but about VP-45 as well. I'd like to take the opportunity to once more thank him for taking the time to answer my questions on a Sunday.
But the story didn't end there. About the same time I received an e-mail from fellow Elvis blogger Troy Y. who runs The Mystery Train Elvis Blog. He'd read my post and found variants of the patch I wrote about, which comfirmed the use of the Elvis patch among other military units.