I wrote Ewan to be a tech guy, hence the tools and what he's been doing for twenty or so years, though he may be a bit rusty with firearms. Tank crews perform maintenance and a lot of repairs of their vehicles themselves, including the two MGs and the 120 mm main gun, but that was 24 years ago.

Also, what are we using for currency in the Tube, unless we're going full item-for-item trade?