Captain Hikaru Sulu, Tuvok and others in “Unfinished Business”

You'll find that more happens on the bridge of a starship than just carrying out orders and observing regulations. There's a sense of loyalty to the men and women you serve with. A sense of family. Those two men on trial, I served with them a long time. I owe them my life a dozen times over. And right now, they're in trouble and I'm going to help them. Let the regulations be damned.

Tuvok

Sir, that is a most illogical line of reasoning.

You better believe it. Helm, engage!