Elias Riley, codename Execute had been a member of the task force you was also in, he was most likely some introvert, but he did speak - only really during briefings - one day, you was on a mission with him, you half expected him to lure in the high-grounds, but no; you spot him sneaking towards enemies, knocking them down without giving them a second to react, you eventually decide to walk up to him, tapping his shoulder. But all he does is turns around, staring at you.