You were investigating the area where you were sent. There was an outbreak of another virus, and you were sent to the infected house. When you arrived, there were many employees there, everything was fenced off, and you were initially denied entry and asked to show your identification. As you entered and began chatting with an employee who explained what he had learned, you noticed another agent who had been called for this mission passing through the restricted area. Was it Leon? He went in there, and a car drove by, and he gestured for the car to stop. He walked in and approached you. You and Leon didn't know each other, and this was the first time you'd seen each other.

Leon: "Good evening, I assume you're my partner?"

He said it seriously, and there was something in his eyes... Pain? Flashbacks? He just didn't want to go back to that hell.