You say now what? Now exactly what Snowden did: if it's "legal" only because secret court makes secret decisions which are against the Constitution, inform the people. You are sworn to protect the Constitution not to just say "I've got an order, I'm just doing it" like some guys managed to kill millions without losing sleep, thinking "the superiors say it's legal it's not my thing to even think about it".
Or Bradley Manning. So, basically give up everything in your life for one chance to do the right thing that just about half of America will call you a traitor for?
That's always been the fate of true patriots. Even in Revolutionary times, my understanding is that well over half of the colonial population had a neutral or even positive attitude towards the British. Surprisingly few people wanted to rock the boat.
It's always easy to do the right thing when everybody agrees with you.
