If I were John Kerry—I am not, as you may have noticed—I would be a little worried about this ad.

Comprised of interview clips from a number of Swift Boat servicemen, it paints a very different picture of Kerry’s Vietnam service than what we’ve been hearing so far.

Of course, Kerry’s actions from three decades ago may not seem relevant now, but it was Kerry who decided to make his service in Vietnam a centerpiece of his campaign. (That decision itself is interesting, considering Kerry spent many years after his four-month stint in Vietnam repudiating his own actions there.) If Kerry is going to cite his service as a reason to vote for him, then it is legitimate to question that service and Kerry’s later denunciations of it.