“Sam, I'm good to go. Guy’s ID says his name is Foster. So, how am I supposed to act?”
Foster is the name of the newly recruited Privateer Recruit who was killed and had his identity and uniform stolen by Jason Brody in the mission Doppelganger. Seeing that his uniform fit Jason, we can assume they were roughly the same height and physique. Looting Foster will give the player a Joint and $29.