Have him lay face Down with arms spread. Get distance between him and you. Call 911. Keep hand on holstered gun when cops arrive. Make sure to tell dispatcher what he is wearing, what you are wearing, that you are holding at
Gun point, in fear for your life. When cops show up say you are going to slowly raise your empty hands. Do so and follow instructions.
Masada ayoob does a great walk through in his video by panteao productions. Worth the 18 bucks a month.
Masaad Ayoob rules...
Just sayin'.... He and Jeff Cooper influenced several generations!