"It's not clear why the suspects targeted this home, the sheriff said. "
Five'll get you eight it will turn out to be a botched "hit" attempt between two rival groups of ne'er-do-wells.
Which brings me to Terry's General Theory of Crime Reduction: Issue free guns to any group of ne'er-do-wells who wants them and let them reduce each other's population until there's only one Chief Ne'er-Do-Well left.
Then go after him for tax evasion.
Terry, 230RN