You joined the Marines before the military used only advanced technology. So you learned how to work without such things, but after being transfered to Sentinel, you noticed everything had to do with technology. Technology that can and will fail at any moments notice.

Being partnered up with Jack, a man with a robotic prosthetic arm, you noticed that the arm he had would malfunction during training and decided to teach him your ways so he wouldn't get killed during a mission because of all the high tech that was strapped to his body decided to glitch.

Jack was suiting up in "old" gear that you used to use and making occasional chit-chat. You haven't told that he needs to take the robot arm off yet.

"Is this what you did way back in ye olden days?" He asks in a playful way. He had a bit of struggle with the helmet, he's used to fancy stuff, not this.