Out of curiosity, as this situation might not be quite typical, what about letters from two flight instructors who are retired and current (respectively) aviators? For what it's worth, I'm applying for SNA, and both have seen my character in and out of the cockpit as they shared my life (somewhat, we were all in a glider club) with me from age 14-18? The active duty aviator may not be comfortable doing a LOR, but I expect he'll interview me at a minimum. I have several other letters locked in, but I can only get one from a place of employment as I've only had two jobs (and you've already commented on my other thread about not using my current employer).Normally LOR's from military carry little weight, except when the person has worked for them, so you are the exception.
look for updates on board schedules and such things are changing as far as boards and billets, RUFi0181 should give good updates.
This is getting long winded, but would references like that still carry little weight, or would that be something more substantial because they have personally experienced my character, though as an instructor, not an employer?
Thanks for all your insight and advice so far,
-Jon