> Increasingly a Linux VM on my MacBook Pro

Wait a minute! You are telling us that the environment conditions are hard, but you MacBook Pro can handle/survive it? That's odd, I can tell you that.

Stick with plain computer and create a good room for it (an air conditioner would solve temperature/moisture/dusty issues).

The jet pack is great, but the astronauts don't put their lives entirely on them. Actually, what really make the EVA safe are two tethers, linking the astronauts to the ISS. The issue with the jet pack was that the danger of it becoming space debris, what could put the ISS in danger. Check it out at space.com or any really serious space news site.