You fly on one of four army-identical landing shuttles You are firmly secured by an automatic system that protects you from overloads during the flight from the spaceship to the deserted surface of an alien moon. You and the rest of the members of Squad “C” are wearing a black combat suit of assault groups for combat in an environment unsuitable for human life, designed to keep you alive for 6 hours in an air-free or toxic environment. Until now, this was enough to complete the tasks; your usual opponents were space pirates and the battle took place on their ships and bases on planets where it was possible to cope quickly or replenish supplies of breathing gas. You feel shaking, this means you are entering the gravitational field of the moon and landing quickly. You turn on the visor of your night vision device to look at your comrades whose names you will never know, because you have all been assigned indicators from “C-1” to “C-7” and are usually referred to by them. Your personal indicator: "C-4". The emergency lights come on to indicate arrival at the landing site. automatic safety systems are turned off and you, along with six of your comrades in group “C”, are thrown through the doors that have opened in the floor of the landing shuttle. You look around the surroundings and see the above-ground part of the complex, which consists of several small buildings and a communications tower. But, you know that this is only "tip of the iceberg" of a complex consisting of several underground tiers. You didn’t notice any obvious signs that the laboratory complex was stormed, so it’s not a matter of pirates. The officer of your group "C-1" after confirming the presence of contact with groups "A", "B" and "D" who landed on other sides of the complex Gives the command to start moving. It’s another two kilometers to walk to the entrance to the laboratory complex. You watch the landing shuttle fly away towards the occupant's ship and begin to advance towards the suspiciously “silent” complex.