“I’m just amazed that the police departments that are very cautious about confronting criminals when danger is known are so cavalier about charging into the unknown.”
Around here the SWAT team is made up of a bunch of military washouts with Rambo fantasies. Most appear to be pumped up on steroids.
They are probably too stupid to understand the inherent dangers.
That's why they charge in at O'dark thirty.
It's known that the occupants are sleeping, and a sleeping (or half-awake) person offers little to no resistance.