I'm new to this post and it may have already been mentioned, if so sorry to be redundant. I went back to the first statement from LE that they had a "tool for breaking glass" and realized they didn't have just a normal hammer. LE style breaching tools fit in line with the heavy riot gear. That said, leads to my theory of the device in the left hand at the end of the video called "Saran wrap/level", I believe to be an explosive device, ied, pipe bomb. I don't think this is someone dressed in complete riot gear walking around with bush league carpenter tools. And where they are hammering, wouldn't glass go out and not drop back inside like drywall? Then at about 2:10 they move with the device like perhaps inserting it in the hole they just made. (I find very questionable, the video has the Midlothian Police seal on it even there in that hallway blocking some of the scene until those last seconds in every version I have found.) What if all the walking around was much more strategic than we first thought, deciding the best spot to position this device? I don't see any reason for ATF other than fire/explosive. They weren't there for tobacco or alcohol. People are murdered strangely every day and they don't show up with a dog. They are the agency responsible for arson, it says so on their site. It's possible Missy interrupted them, robbery or political statement, I sure wouldn't expect someone at a church at 4:20 am. The large glass breaking/breaching tool I saw could easily kill if hit in the head. Or if she was targeted, the explosive device set as a booby trap caused the head injury. They can be fired using remote control so the murderer could have already gone as soon as it was set, didn't have to be there perhaps. Might have looked like an accident. But I have not heard if all areas of the church are open to the public and if the device was enough to kill it would cause more damage than broken glass that wouldn't be so quickly repaired.