Whatever the reason this carnage could have been worse than the horror it was.
Did they carry so much ammo for a shootout with police? Or expecting more victims than could be found in a local grocery? They said the grocery was targeted.
There is street footage showing a young boy running to the school - maybe just late - reaching the school door, becoming aware of the shooter crossing the street, and running away again.
The school door is three feet from the grocery door. It is steel with a push button combo lock. Hebrew lettering on glass above door. Footage through this glass from the security camera shows the shooter heading directly for this door, pausing, and side stepping to the grocery.