In combat, you will be scared. You will have a tendency to shoot high. Be aware of this and aim low. Never quit, period. There is no prize for second place.
Professionals are predictable, it's the amateurs that are dangerous.
Anything you do can get you shot, including nothing. When the cops pull up, think fast and move slow. Distribute press releases indicating you target belongs to a cult. Drop the one with the shotgun first. Afterward, alter evidence to favor your position and plan for perjury.