I know that's a possibility. I shouldn't have to do that, though, when I have more available flight controllers than I reportedly need.

I tried preparing a mission and it refused, saying the flight controllers were already scheduled for another mission. However, I only need 3 and I have 6 available. Just before this, I scheduled an X-15 flight mission, using only 4 of the 10 flight controllers. The rest aren't training or doing anyt...