My wife and I will be visiting the USA in August, spending two weeks visiting my parents-in-law at Coronado.  Are there any Jewish personnel

Sir you are in luck.
The JWB Jewish Chaplains’ Conferene was just in Coronado. I went and met the two Jewish Chaplains stationed in Coronado.
Ch, Capt Irving Elson and Ch, LT Netane Chrysler (not sure of the spelling there or his english name) are both stationed in the Coronado Island area. I don’t have their contact info, but I’m sure if you contact the base chapel they can put you in contact.

Hello!

It was great to meet you and everyone else.

SGT Kresge