TexasCHLforum.com

There were no signs up today. There was a generic no firearms entering the parking areas but nothing whatsoever at the entrance gate. There was a bag check at the entrance, but it's a complete joke, just volunteers (many looked to be high school maybe college aged) looking in the top once you open the bag. I didn't see any police, security, etc. anywhere near the entrances; they were all doing traffic control.

This is on their FAQ:

Q12. Which items are restricted?
Answer: Food, drinks, coolers of any kind, portable awnings/tents, alcoholic beverages, pets, bicycles, firearms, skate boards, scooters or in-line skates are not allowed on the grounds, including the parking areas. Please see the show tips page for more information.

I don't remember what type of signs were up last year. I don't believe there are any type of metal detectors though. TSA isn't a factor because the airport isn't a commercial passenger airport.