The defendants assert that Officer Gregg Lee checked to see
whether the door was locked, knocked on the door and announced the
officers’ presence, and then waited several seconds for the
occupants to respond before Officer Todd Edwards breached the door.
… But the plaintiffs pointed out that only 7.194 seconds
elapsed between the detonation of the second stun grenade, which
was thrown from the rear of the house, and the detonation of the
third stun grenade, which would have been thrown by the front?entry
team after breaching the door. … Because a stun grenade takes 1.5
seconds to detonate, the plaintiffs argued, the front entry team
had only 5.694 seconds to open the screen door, check to see
whether Terebesi’s door was locked, knock, announce, wait for a
response, breach the door, look inside the room, and then throw a
Every video of a SWAT entry I’ve ever seen (and I’m not talking about legitimate no-knock instances) the time between the police “knocking and announcing’ themselves, and bashing down the doors, smashing windows, and throwing in various sorts of explosive stun devices has always been five seconds or less – in other words, they might as well be no-knock, because it is humanly impossible for occupants to make any sort of response to the “knock and announce.”
The cops know this, of course. That’ why people who worry about such things should have reinforced steel doors inside steel frames with heavy duty locks, and bars over ground floor windows. It won’t stop them – if necessary, they’ll come through the walls – but it will give occupants enough time to at least figure out what is going on.