Protecting What Matters Most
Our team comes from Australia's most capable military and policing units, including experienced explosive ordnance disposal technicians, dignitary protection specialists, technical surveillance professionals and security experts.
They've worked across varied and high-pressure landscapes, gaining the judgement to read an environment, de-escalate early, and adjust their presence accordingly—discreet when it's needed, visible when it's safer, always choosing what keeps you protected.
Our Executive Protection operators have spent years refining their craft, bringing a level of capability shaped by experience in demanding, complex environments.
They read environments, anticipate threats, de-escalate situations, and move through any context.
Boardrooms, school runs, international travel, AGMs, public speaking events—without disrupting your life or business operations
Veteran-Led.
Proven Through Experience.
Grant Killen leads Concentric Concepts with the calm authority earned through managing real-world complexity. He converts high-risk situations into clear, composed action, shaped by extensive operational experience
Operational Background
Royal Australian Navy Clearance Diver
Private Contracting in high risk environments
Security Consulting – specialist protective support for landowner engagement and stakeholder relations
Queensland Police – Explosive Ordnance Response Team (EORT) Technician, Dignitary Protection specialist, firearms and operational safety instructor
Licences, Standards & Professional Credentials
Certified Australian Veteran Owned Business (AVOB)
Data and system controls implemented in line with the intent of the Australian Cyber Security Centre’s Essential Eight framework
Fully insured for the security services we provide, including sensitive and higher-risk operational environments
Compliance with WHS legislation and security industry regulations
