As everyone here has mentioned, the guy reaches into his suit because he's itchy... on a contaminated planet? And then if that's not enough, one of the infected, overemotional crew members locks himself in engineering and turns off the engines? You would think on a star ship that there'd be some kind of lock-out code or whatever to stop an infected nut from being able to just stumble into a room in a seemingly drunken stupor and flick off the engines. Like I said, I'm willing to cut Star Trek TOS some slack but this is just going too far. I have a hard time watching anything that is completely impossible.