You can potentially pick some up from the Siege chests from the Greater of Evils. Though it is probably a tad late to be looking for them as it ends in 3 hours.
Typically we don't see PvE upgrade tokens in the FM. Keep an eye out for time limited campaigns that offer them. There will potentially be some in the upcoming Pillage.
how about some upgrade tokens for the Arctic Obliterator that would be a handy piece of tech folks in a mission? please
Rampant upgrade offers means limited chance of seeing those tokens elsewhere. But the fact that the offers are for coin and not money means the chances are getting better.
"a computer once beat me at chess but it was no match for me at kick boxing"
Typically we don't see PvE upgrade tokens in the FM. Keep an eye out for time limited campaigns that offer them. There will potentially be some in the upcoming Pillage.
But the fact that the offers are for coin and not money means the chances are getting better.