I dislike playing Monday morning quarterback on an event that I do not have all the information. To say the officers failed to hit their opponents is only half a statement and failed to mention where the LEO bullets went, if such information is available. It is easy to make guess that do not look for deeper causes.
LEOs have a history of failing to put a bullet into subjects they can almost punch in the nose. Or they cannot hit a person across and down an alley when they hip shoot. Point shooting or aimed shooting is never the answer ALL the the time. IMHO, people miss close opponents because they shoot at the whole man rather than concentrate on a fixed point on the opponent's body. Just like the quail hunter who shoots at a covey goes home empty handed.
Have a nice day. Good luck and God bless.