After spending several years mastering the role of firefighter you've decided to elevate your game by learning the rank above you: engineer.
The engineer is different than 'driver/operator' (D/O) in that one is a defined role you can own, the other describes what you do. The Engineer becomes the mother of the ship. When properly trained, a solid engineer will be two steps ahead on all matters emergency. House fire? Multiple car pile-up on the freeway? Freightliner leaking unknown chemicals on the road? No problem.
While you may never know exactly what your captain is thinking, you can know what will be needed next on the fireground.
Keep up with the lessons and you too can become a world-class handler of emergency equipment. Keep the water flowing and keep learning.