That's right. The rules of engagement I learned 30 years ago in the Marine Corps would have precluded deadly force at all in this incident. Six reasons you can load your weapon and apply deadly force:
1) To prevent serious crimes against others such as rape, murder or arson
2)self defense.
3)Defense of government property vital to national security.
4) Defense of government property not vital to national security but inherently dangerous to others, including weapons and ammunition.
5) In connection with aprehension and escape of a suspect involved in any of the above situations.
6) Lawful order of a superior (which must, in the individual Marine's judgment encompass one of the above situations).
You can't just blow people away.
Walt