Just my opinion, but it looked like the police had set up cameras on the main house roof vent stack looking into the back yard over the back door that leads into the garage; on the front corner of the guest house roof looking out at the driveway toward the street, and on the side of the guest house roof looking out toward the covered open back porch on the main home. Remember how LE turned the house back over quickly - guessing they set these cameras up and are back today recovering footage from these cameras. LE may have set a trap. Just my thoughts based on what was seen in the drone view footage.