You know how to tell if a squid was a SEAL or not? If he was a SEAL he won’t mention it.
Former SEALs are intensely proud of their service, as they should be; however there are few situations where they are comfortable enough with the venue and the audience to discuss their unclassified life and times. It is just too exotic and alien for most people to appreciate.
However, I will not credit them with any grace when it comes to their skills at interior design. If you are fortunate enough to visit them at their home, their decor is blindingly and unabashedly SEAL, over about every square inch of vertical surface from the waist up. (The same rule applies to other elite warriors.)
I think perhaps the most tight lipped of all prior service military are boomer submariners. They will not speak of any element of their service to anyone. But SEALs have a classified life and an unclassified life, and while guarded in casual conversation, they are not handicapped by it.