Third person could be a cop, maybe one of them went around the back, got in and came to open the front door to the others.
So the third cop slips in the back, walks past perp and Pelosi tussling over a hammer, says “scuse me, I’m just going to go let my 2 buddies in”
Not sure about this but, the cops said they “saw” Pelosi was being attacked. That was probably through the large window that has been posted at many sites. At that point they would have gone in through the window one way or another.
The police have not said where this guys cloths were or how they saw what was going on. It will be interesting to see if David is charged with breaking and entering. Even if he is charged with attempted murder, he will have a good defense if he was let into the house and later Pelosi came at him with the hammer.