Most people believe what they see in movies and on television, so there isn't an inherent need for what procedures are truthful. Frankly, they're boring and that's why entertainment uses "creative license" to make things more interesting for the audience. If not, they'd fall asleep or change the channel to something more stimulating.
If you want to get the most realism possible, go visit your local law enforcement agency in person and ask to speak with their Public Affairs person.
Of every one hundred men, ten should not even be here. Eighty are nothing but targets. Nine are real fighters, and we are lucky to have them, for they make the battle. Ah, but the One... One of them is a Warrior... He will bring the others back.
"Wrong door, buddy!"
Let no man's ghost say my training failed him.