Police say Metro officers, Tennessee Highway Patrol troopers and an off-duty Mt. Juliet officer were involved in the incident 

Authorities say shooting followed 30-minute standoff with armed man who was firing a gun

School Resource Officer Byron Boelter shot 20-year-old Rod Reed in the leg after Reed apparently reached for a gun in his car

MNPD claims three officers, who were all wearing body cameras, fired on a man who charged them with a knife