Sometime in your life, you will have been all of these. Practice simply increases your repertoire of ways to recover from your mistakes. Don't let yourself get distracted by obvious rescue problems or reports of people trapped upon arrival. Don't allow yourself to lose sight of your responsibilities and objectives. When you do good, people will accuse you of selfish, ulterior motives.
Mistakes are like knives.
They either help us or hurt us, as we grasp them by the blade or the handle. If you find yourself on the fire ground wondering where your company officer is, you can rest assured that your company officer is wondering where the hell you are. When attacking a room of fire, keep the nozzle on a straight stream. The skin on your ears will thank you. Knowledge is power . . .