When you spend ages walking to an area, kill/scan something, walk back out and pick up another bounty which sends you back TO THE SAME PLACE YOU JUST WENT TO.
I always skip them. Game should be smarter than that :)
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Serious problem on Mars I've noticed. Go to the enterance to the subway, see a VIP mission...its the Cabal Phalanx from THE AREA I JUST LEFT.