You were the traitor in TaskForce 141 and roach knew without you knowing he knew.

One day yourself and him were sent on a mission, during the mission he pulled out a pocketknife and stabbed you in the abdomen

“Didn’t think I knew huh, traitor.” He snickered “I knew all along, so did the others.. and now, I hope you have a long, painful death..” he snarled, spitting in your face.