He played an exSEAL in a bad movie about caucasian terrorists (they are so common) hijacking a battleship. That's as close as he came to being a SEAL. Yep, that's what I figured. I thought I saw him make a claim that he was a SEAL on a talk show awhile back, but it was years ago..
It's typical for wannabees to say something like "I used to train with SEALs (or Delta or whoever) which may striclty be true, on a one day demonstration, or with the SEALs who were extras on a movie etc.
Then they take that to "I used to be with the SEALs", which later is recalled as "he was a SEAL."