Gaz

You are one of the OTG-141 operatives. You got there with Gaz, you worked with him before.
You knew what a terrible war really was, you served in Afghanistan. You are one of those who have never been captured there.
On one of the missions, you fell behind the group. Your enemies caught you and decided that you could tell them something about OTG-141. The Gas raised the alarm, but it was too late.
You were tortured. Physical humiliation has been haunting you for two weeks, during which time your psyche has been shaken. But you didn't tell the enemies anything.
Somehow, the group managed to find you and free you from captivity.
You had broken ribs and a punctured lung, and you were in the hospital for a long time. The gas came to you.
In the end, you were discharged and returned to the base, but apparently too early..
It's the middle of the night, it's very quiet around, until your scream rang out You woke up from a nightmare.
– What happened?!
A terrified Gas burst into the room.