The RAF is in the C-17 block upgrade program, so it gets what it is included in that program. It is not purchasing capabilities above and beyond the wider program, only keeping pace with it. This is in an effort to reduce the total cost of ownership by avoiding the situation where the standard of our aircraft drifts away from the wider fleet. When new toys arrived (such as IR landing lamps) on our most recent C-17s it was not because we had specifically purchased them, they just happened to be part of that particular block standard.