The ACLU provides an interesting look at some of the tools used by some of our domestic enemies against innocent American citizens. There is no doubt that these tools discussed are the same technologies used against our enemies overseas. Now they are being used against us by us.
Remember your oaths. It has never been more important that we do so, and it probably has never been so costly to do so, as Edward Snowden's story demonstrates. Domestic enemies might say that real Americans need not apply, but the reality is that great Americans are needed in public service more than ever.
Faithful public service ain't no chump game.