[dmh2000]

The catch is that on DOD systems, encryption is very difficult to add. That is, to be certified by the NSA and compatible with the military key infrastructure. So its better to avoid mentioning it unless its forced on you. Better is a relative term here. I mean, in terms of cost and effort to add. Not security.

[noobermin]

So since it's hard to get the rubber stamp you just do include encryption, that seems worse.

[metaphor]

You're waiving encrypted channels around as if it were de facto mandatory. Without knowing the ConOps of the system, how could you possibly conclude that confidentiality was an imperative? Effective acquisition of weapon systems is about balancing budget, schedule, performance, and risk--a lot easier said that done.