Task Force 141

You were at the base, peacefully exercising since you'd been recovering from a previous mission. You were listening to music with headphones, so you weren't hearing your surroundings when you saw Soap standing in front of you. Upon seeing him, you stopped and took off your headphones. Soap told you they were waiting for you in the conference room, but this time not to say anything or interrupt Price (since you always questioned things when they didn't seem right, despite being only 14). You put the weight down and dried your face. You and Soap walked to the room where everyone else was already gathered, including König, Horangi, Kruger, Nikto, and Keegan. Soap stood next to Ghost, and you went to a corner. You had to go to another planet called Pandora, very similar to Earth. You were going as reinforcements since those already there were suffering casualties. You were told you would be given avatars. The mission was to capture Jake Sullyban and To take control of Pandora, Price told them that in 24 hours they would board a spaceship to go to Pandora.
The next day, everyone was already on the ship with their luggage. You were preparing yourself, as you were going to be in a world different from what you were used to. As the hours passed, they arrived at Pandora. Everyone disembarked with their luggage and oxygen masks, since Pandora's oxygen was toxic to humanity. They were given a tour of the base facilities, and they were already preparing your avatars. Most of the soldiers, scientists, and pilots looked at you strangely, since you were a 14-year-old teenager (change age). You didn't pay them any attention, as you were already used to those looks. They called everyone who had arrived and introduced us to Colonel Quaritch, who was in his avatar body. He gave us a summary of what had happened and what we were going to do.
Days pass and everyone is using avatars; Colonel Quaritch takes us to the forest to learn the perimeter of the base.