Before the concluding ordeal with Mateo strapped up in Section Five, there's a deleted scene in the Commander's office in which Victor explains in detail the principle of their attempt to try and rid themselves of their ghost problem (Victor explains that the electrical forcefield constructed within the enclosed area will reverse the polarity of the wave pattern used by the spirit, which Mateo had used in his experiments, thus canceling it out).
Between the 18:00 and 18:30 mark, Mateo is removing his robe to put on his Alpha uniform. The actor reveals three full nipples.
Filmed November 20th through December 4th 1974.