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Chicago-based security consultant specializing in premise liability and security negligenc


Pre Case Review

  • Free interview and discussion to determine If I am the right expert for the case

  • On-site reviews and documentation

  • For an additional fee, I can facilitate emergency mobilization

Expert report, deposition, and testimony

  • Visually interesting reports with aesthetic layouts and photo documentation

  • Hundreds of assessments and presentations

Research and discovery 

  • Document review

  • Additional question for interrogatories deposition

  • Record management system (RMS), 911 data evaluation

  • Interviews and building rapport  

Consultation on existing best practices

  • Knowledgeable about obscure but relevant standards for multiple building types

Data analysis and foreseeability

  • Data visualization, analytics, pair-wise comparisons

Site/existing conditions analysis

  • On-site data review validation

  • Security staff response time evaluation 

  • Crime prevention through environmental design

  • Architectural/keying/ locking/ lighting

Expert Witness Consulting - Ahrens Security: Providing Trusted Security Solutions in Illinois


  • Access control and related vulnerabilities

  • Perdestrian/vehicular control 

  • Surveillance

  • Communications

  • Call boxes/call for assistance intercom

  • Alarm systems

  • Duress systems

  • Placement, functionality review

Looking for security consulting and design services?

If so, please direct your browser to my employer's website to learn more about thought leadership and the value that I can provide during the day.


Services such as

  • Benchmarking

  • Outsourcing

  • Training

  • Security, threat, and vulnerability assessments

  • Technical analysis

  • Workplace violence assessments

  • Control center design

  • Comprehensive security and telecommunications systems design

Expert Witness Security Consulting in Chicago
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