I went to bed one night, and awoke to nearly the same scene. (on first reading)
The house was bright from the helicopter flood lights and an officer was looking in my garage. His dog was doing a search as the officer checked shadows with his light.
Seems there was a robbery and the BGs bailed / abandoned the car half a block away.
I know...different from being the direct focus of the swat team...but close enough to see the need for a series of plans...( A)...(B)...(C-H maybe) !
I agree that the safe room/call 911 and communicate is the way to go. Last thing I want to do is GET SHOT! messes up the whole week.