[ajuc]

Even now, on Earth, we are using airplanes that were built decades ago. We are also building new aeroplanes designed decades ago (F-16), that have only electronic upgrades (avionics, radar, etc).

Most armed forces around the world consist of vehicles designed in '80 or '90. And I think Death Star is more complicated than tank or plane.

[timwiseman]

When I served in the 82nd some of the NCOs told me that some of the vehicles we used had seen service in Vietnam. I never verified this, but I did verify that some of them were manufactured in the Vietnam era.

[razzmataz]

Did you serve while the Sheridan tanks were still being used? Those saw action in 'Nam.