Oh gee....what a feat!
Under the cover of darkness, a gang of thugs stepped over a four foot high wall....intimidated unarmed folks with axes.....vanalize a Police Helicopter....Detectives were ready to make arrests on thefts but the identity of the axemen remains unknown.
A few questions pop to top here.
Four foot wall....what about a ten foot fence with razor wire on top....electric gates operated by those inside the compound....Video cams....motion/infrared sensors like Tesco's use for Burglar Alarms....and Armed Police then the Id's of the Axemen could be determined by DNA and Fingerprints assisted by a third eye.
Someone really needs firing over this!