Contracts in Bungie's new extraction shooter Marathon will ask you to visit different spots on each of its maps, though a common theme is asking players to deposit specific items into devices called DCONs , which transport matter imbedded into them off planet.
Its a way of getting the salvage or resources you're being sent to Tau Ceit IV's zones to retrieve to the factions asking for them, and thankfully, each zone ( Perimeter, Dire Marsh, and Outpost ) has at least three that you can head towards