It could be dark if the blinds/curtains were drawn. I would expect someone who works all night to have a dark house during the day time, but this lawyer says that they were standing with the door wide open with sunlight coming in. However, there are trees in the front yard of the house in question. I’m not sure how much light is let in there. But I don’t get these SWAT guys not going in to the living room which is right at the front door. There’s probably a reason.
I'm sure that there was a reason and I really suspect that the reason involved having to figure out how to explain the recently ventilated body laying on the floor. Everything about this just screams that someone on the entry team AD's into the door and then everyone else opened up. Nothing about this says to me that this was a highly trained and practiced entry team. In fact, I'm pretty sure that stuff like this is exactly why Andy only gave Barney one bullet.