The red shirt is always dead in TOS, so Bones in the Iron Triangle will always say: He's dead, Jim... A friend of mine has explained this in detail, so I won't go into details here. Speaking of Bones, he also has a famous saying, which was later used by other doctors, such as Bashir in DS9 and EMH in VOY: I'm a doctor, not a... After all, the TOS crew is basically Everything above is omnipotent, but Kirk often asked his good friend McCoy to do other things, so McCoy often used the above sentence to shirk ~ and later became JJST.