Complex sentence: Mission Control debates whether a rescue flight can reach them before their oxygen runs out; program director Charles Keith (Peck) is opposed to the risk of using a developmental craft, a lifting body craft that would land like a plane.
Split into simpler sentences: Mission Control debates whether a rescue flight can reach them before their oxygen runs out. Program director Charles Keith (Peck) is opposed to the risk of using a developmental craft, a lifting body craft that would land like a plane.