John Kerry had a squad of vets who supported his story too. Don't ever think that just because someone is a vet or a SEAL for that matter, that it is an assurance that he won't lie like a rug for the right motive.
That’s the problem - how to decide who to believe.
Several years ago a general was on TV talking about something and someone had accused him of lying. My husband was in the Air Force and I asked him if generals lied. His reply - “hell yeah - how do you think they got to be generals?”