I do believe all loud domestic or otherwise squabbles require police to ‘suit up’ and not go it alone if at all possible. Too many ferals and other cretinous types have decided that their duty is to die if necessary but to take a cop or 2 with them.
Wondering how many of the domestics with LEOs shot/killed are actual domestics? Since domestics are one call that should generate a prompt response, if a perp or perps wanted to stage an ambush and not wait around, wouldn’t they call in a domestic?