G20 Summit is Example of Layered Security Approach

Pedestrians are reflected in a glass building as they walk alone a security fence on Front Street in Toronto, Thursday, June 24, 2010, as the security fencing is in place around the Metro Toronto Convention Center for the upcoming G8 and G20 Summits. (AP Photo/Carolyn Kaster)
A perfect example of a layered, or “onion”, approach to security planning is presently on display at the G8 and G20 Summits being held in Huntsville and Toronto, respectively.
The layered approach is often advocated in CTPED (crime prevention through environmental design) textbooks, and is a familiar concept to security industry experts and practitioners.
A strict CTPED approach involves strategies for access control within the built environment, and express use and maintenance of the “protected space”. An access control strategy incorporates the ability to provide for natural surveillance of one’s surroundings, defined points of entry and access control measures, and territorial reinforcement.
The G20 Summit will be held in the heart of Canada’s largest urban centre, necessitating an artificial “built” environment to augment the existing one. And, as various media and the Integrated Security Unit in charge of security have reported, that artificial environment – namely a security fence estimated at 6 km in total length – is quite large.
In fact, there are two fences, which reinforced another CTPED concept – that of “defensible space”. In security circles, this is also referred to as “sterile space”. The area between the outer fence and the inner fence is sterile in the sense that severe access restrictions have been placed on those wishing to enter.
Most will require pre-registration or accreditation, and for the most part include media, policing and security authorities, and attending delegates. The ISU has said that members of the public who show identification and have a valid need to enter will be permitted to do so, depending on the current security situation. Since the outer perimetre includes several hotels, a residential condominium building, and the CBC building, it is likely that unregistered members of the public would be heading to one of those locations, potentially with an escort.
The concept at the outer perimeter is to isolate any threats that manage to make it past that perimeter. The inner area is blanketed with surveillance – again reinforcing a CTPED concept, that of “natural surveillance”. The size of the secure zone requires CCTV, and as has been reported, there is plenty of it: 77 additional CCTV cameras in all.
The inner fence, it can be expected is strictly off limits to anyone but particular media, delegates and security personnel. This again reinforces the CTPED concept of territorial reinforcement by restricting private activities to clearly defined private areas.
We see from the G20 Summit example that the security measures known and announced to be in place are in reality no different than what a security consultant, service provider, or even community police officer would recommend for a private residence, retail shopping mall, residential high-rise or commercial property – just scaled up to meet the particular needs of a major international event.
Applying a layered security approach is not just for heads of state.
Applying a layered security approach is not just for heads of state. A residence can be adapted to provide natural surveillance by curtailing shrubs that obscure windows, and a lawn mowed weekly reinforces territorial use.
A coffee shop posting a sign that limits customer visits to 20 minutes provides notice that follow access control principles straight out of a CTPED manual. The policy doesn’t even need to be enforced rigourously to provide a psychological message to undesireable elements that their presence is not welcome.
