I think I'm done with the odyssey missions ....suppose to go get the superconductor from a crash...something simple to practice on >>>>> threat 2 my had 5 mcp guarding or salvaging (in solo) I roll up in my SRV scan, they wanted, i light em up and they destroyed my srv with 3 shots,,,, REALLY DEVS come onfirst mission went about that bad too because i according to them stole it ...need to pay attention too what i pick up in this game 12.5K fine for mission fail
Had a similar experience to you .. except have tooled ship with dumbfire missiles, quite an effective way to take them out (just make sure you're not shooting at clean soldiers). You can also run them over with SRV at a push (at least you'll take a couple of them with you).
They are a trick to get rid of on your own but what made me (in a kind of deranged semi lunatic fashion) was how, not only was there one squad when I arrived they got reinforcements .. to guard one, single, box! Some people apparently take security extremely sewiously! Threat level really means something at least.
Good luck o7