What does any of that have to do with this situation? Someone bangs on your door. Guy grabs a gun and opens the door to see who is there. You think that gives the officer that banged on the door and hid from view the right to shoot.In certain situations, unholstered gun in hand, yes... for example, some rando banging on your door, you open the door and they have a handgun in their hand? Are you saying that is no threat until they point it at you?
Another situation, someone trespassing on my private hunting land... OC handgun on hip is NOT the same as gun in hand.
Huh? Same OODA loop for whom? You think the airman opened the door pointing his gun, recognized the officer, and lowered the gun in a second? At the same time, the officer didn't notice the airman lower the gun and shot him.Why do you say that? Same OODA loop... gun at the ready, recognizing a LEO and lowering it. IMO, entirely possible... and as you say, eminently important.
You really seem invested in this officer.