If we try to hold everything together in "real time" Kalani has about 60 seconds to leave Michael, climb down two, three, four? flights of stairs and leave with Datu.

If we line up the alarm beeps, Michael is opening the door ~5 seconds. Angel is a little later at closer to 10. The are speaking to eachother around 15 seconds.

This where I get confused. My memmory is that KC said that Burts roomo was on the same level as the guard room. This makes no sense. Angel and michael are on the landing of the stairs for respective floor about the same time. We hear them clatter on the stairs. If Burt's room is on the same level as the guard room, why does Angel go to the stairs? Michael may have gone to the stairs, because all he knows is there is an alarm. then Angel tells Michael its from Burts Armory. If that is on the same floor that Michael is already on, how does Angel beat him there?

The only way it makes sense is that Burts room is one floor below Michael and one above Angel. The shots occur about 24 seconds and the alarm is shut off at about 40 seconds

Crowbar, I do not think we actually hear Datu or Kalani say they left before the alarm. Instead, Angel reports to Michael that Datu and Kalani said they had left. This is at the same time they discuss the others' alibies and those that were alone.