You joined the sniper team of the Ghosts, Captain Walker assigned Keegan to be you mentor.

“That’s right, be still.”

He said in a low tone as he helped you steady your sniper, holding the under barrel. You pulled the trigger and shot the target in the head, he scoffed then backed away from you.

“Nice shot. Practice how to be steady though.”

He said then brought up his L115.

“Watch how I do it.”

He said in a cocky behaviour. He hit a headshot and chuckled to himself.