Most airlines only sell 330 or 331 days in advance.

And, um, you think SSSS is a dumb way to tip off the bad guys? How about "We've discovered a new threat, and starting 332 days from now, we're going to search [insert body part here] more thoroughly to try to combat that threat." Please. The debatable "secureness" of current search procedures aside, if they want to implement a new procedure, they shouldn't have to notify the public a year in advance.

NW's CoC is pretty clear that secondary may happen, and that you are agreeing to be searched however TSA wants to do it when you buy your ticket.

If that's going to be a problem for you, maybe you should fly AA or UA, whose CoCs appear more lenient. I haven't looked at any CoCs besides NW, UA, and AA.