Insider here. Back with some answers to a few of your questions. Thanks for your patience, by the way. It takes a while to find the answers to some of these questions.
Squeaky wheels first: Tomlogtom111 asked what kind of watch Callen and Sam wear. They both wear Luminox watches, Tom. I got a close look at Callen’s but couldn’t tell if it was an EVO model like you suggested. All it says is “Luminox” and on the back is says “Series 8800”. One of our props guys told me that Sam wears the same but that it’s the “Blackout” model. He mentioned that these watches are specifically designed for and issued to Navy SEALS which I think is pretty cool. Note: when the guys go undercover they use different watches that suit their “legend”.
Picture is courtesy of CBS.