That seems to be the M.O. for cops doing their beloved "dynamic entry", more commonly on the wrong house these days.
It would seem from the home invasions where thugs pretend to be cops that lighting up anyone that breaks in with weapons should be the prudent thing to do Treated as a grave threat unless they can prove otherwise, fast.
Wait to see if they are really cops or not could cost you and your family their lives.
Example of what happens when police makes dynamic entry into wrong house. A completely innocent man goes to prison.
https://shadowproof.com/2011/07/01/corey-maye-will-be-released/