I attended both shows for the first time this year, and there wasn't any problems getting in to either NAS Oceana or MCAS Miramar with my camera bag, but I attended the show at Holloman AFB(pictures will come shortly, I think
) the weekend after MCAS Miramar, and there wasn't you allowed to bring large camera bags, any coolers or anything like that.
I use the Think Tank Airport Security V 2.0:http://www.thinktankphoto.com/products/airport-security-v2-roller-camera-bag.aspx
So to be sure, I would look at the shows website and see if it states anything with camera bags, and if it's a prohibited item, and there is a contact form on the website, try writing to them and explain you self, and see if you're granted to take your camera bag in.
Hopes this helps,