To the casual glance it looks like a normal police car — same markings, same lights, same faces at the wheel. Only the two small yellow circles, one at each of the top corners of the windscreen, tell you that this is a mobile armoury. It will often be a BMW X5: a SUV’s suspension copes better with the weight of the weapons, the gun safe, the ballistic shields. Inside, the occupants will be wearing Glock 17 pistols and have access to weapons which could include, in ascending order of bullet size and ‘penetrative power’, the Benelli Super 90 shotgun, Heckler & Koch MP5 submachine gun, the G36 carbine, the Sig Sauer automatic gas-piston operated rifle, and the G3 sniper and assault rifle.
The MP5 is the standard; hollow-point rounds are used to prevent ‘over-penetration’; that is, bullets passing through a target or wall and hitting a bystander.