Meanwhile, Senior Airman Andrew P. Brown, age 25, with the 92nd Air Force Security Police Squadron, was patrolling the base’s housing areas on a bicycle when he received an emergency call on his two-way radio. He pedaled a quarter-mile to the scene and, while still some 70 yards away, spotted Mellberg shooting at scores of panic-stricken people in the parking lot.
He ditched his bicycle and ordered the gunman to drop his weapon. When Mellberg turned and shot at him, Brown dropped into a combat crouch and returned fire with his 9mm Beretta M9 semiautomatic pistol. He fired four rounds at Mellberg; two missed, one hit him in the shoulder and one struck him between the eyes, instantly ending his homicidal rampage. The drum magazine in Mellberg’s MAK-90 still held 19 rounds of ammunition.”
http://murderpedia.org/male.M/m/mellberg-dean.htm
LAPD didn’t have a weapon overmatch problem, they had a settle down and aim at the head problem.
Spray 'n' Pray.