And if you do start doubting our mission, keep your mouth shut, because we'll ruin your life no matter who you are (that's why they're going after a retired four star general right now over leaks).
That's also why Obama administration has been so hard on leakers and whistleblowers in general. To serve as a clear message to those who would talk about what's been happening at the NSA: we will punish you. The reason for clamping down so hard is because the scope, both in the amount of surveillance and in the sheer number of people who knew (in the military, government employees, contractors, and private companies NSA is collecting data from) had gotten so out of control.
The questions in my mind are:
How much of a systemic change has this program caused to the federal government already (e.g. clamping down on whistleblowers)?
How often have the capabilities of NSA been used to track down whistleblowers of any kind already (ironically employing what's causing the problem in the first place as part of a "solution")?
Have these capabilities been used to settle political scores already? I'm thinking of Petraeus. Interesting how those dots were connected. Interesting also that by then both Obama and Hillary Clinton had reason to be upset with him.