Deke Slayton: Jim, we've got a problem. I got some blood work back from the lab. Charley Duke has the measles.
Jim Lovell: [Unconcerned] So we need a new back-up.
Deke Slayton: You've all been exposed to it.
Jim Lovell: Oh, I've had the measles.
Deke Slayton: Ken Mattingly hasn't.