I'm sure it's important to have a stable technology to train on in the military; at the same time, I remember one of their open-days they were showing off a civilian in-flight entertainment system that was so clearly overpriced for what it was that I knew even as I saw it that I could've done better for lower unit-cost. This isn't to show off, even despite my having not yet finished secondary school at the time — my solution would've been little more than "glue laptop to chair/wall in front", as tablets weren't something people discussed much around me in the 90s — it's just that the business solution was really unimpressive.

I assume there's secret military equivalents to that public project.

[0] if you exclude the job interview at Lockheed Martin for the year in industry paid work experience part of my degree, which didn't go further than an interview