SNIP

There's a big difference in environment and reliability requirements.
I've designed avionics equipment for every Navy fighter used in the last
25 years (not to mention AF). The differences between Mil aviation
and commercial are striking. If it's not designed for the mil
environment,
it fails prematurely. Period. And Murphy guarantees it will be at the
worst
possible time for you, the pilot.

Undoubtedly true, but the fact remains that "milspec reliability" comes at a
ridiculous premium in cost.

R / John