Terminator 2: Judgment Day (1991)

Continuity mistake: The T-1000 punches his body through the window of a helicopter to get inside. An instant later, the hole in the windshield is gone. (01:56:35)

John Connor: We've got company.
Miles Dyson: Police?
Sarah Connor: How many?
John Connor: Uh, all of them, I think.

Trivia: While the characters were running around a hot steel mill, in reality the temperatures in the mill averaged only about 40° Fahrenheit. The actors had to be consistently spritzed with water to make it look like they were sweating.

Question: One of the taglines for this film is "It's nothing personal". I have no idea what that has to do with the film and was hoping someone could explain it.