FTOs have the unheralded and often thankless job of training you to survive and flourish in the real world.
Academy training is held in daylight, not the fog of a dark city street on the midnight shift. In the academy setting, you get do-overs and practice runs, and you don’t get injured, killed, or sued for your mistakes. You also get to wear padded protective suits, “tap out” when the bad guy gets the best of you, and use training rounds in your weapons. Academy gyms have padded floors so you don’t get hurt when you fall, and it never rains or snows inside them.
The real world ain’t like that, and you need a guide to show you the ropes.
Field training is where your academy experience and the lessons that you have learned are applied with real-world applications and they become real for you. In the academy, you learned concepts and theories that you had not yet personally tested. In the field training program, you will test under stress and see if they really work.
Don’t expect everything to go exactly as you were taught in the academy. Your FTO’s style and your individual style will help you tweak what you’ve been taught and develop the techniques that work for you on the street.