Experienced Law Enforcement & Counterterrorism Instructor
Resume:
Mark A. De Simone
Houston, Texas
️ ******@*******.***
Professional Summary
Highly experienced Law Enforcement, Counterterrorism, and Security Professional with more than 25 years of service in municipal policing, counterterrorism operations, and federal-level emergency response training. Proven instructor with deep expertise in CBRNE response, hazardous materials operations, terrorism mitigation, and tactical training. Gulf War veteran and September 11 responder with a strong record of leadership, instruction, and operational excellence.
Core Competencies
Counterterrorism Operations & Training
CBRNE / HazMat Response & Mitigation
Emergency Management & Incident Response
Law Enforcement Instruction & Curriculum Delivery
PPE, SCBA & Decontamination Procedures
Crime Scene Processing in Hazardous Environments
Firearms, Defensive Tactics & ALERRT Training
Interagency & First Responder Coordination
Risk Assessment & Operational Evaluation
Professional Experience
Center for Domestic Preparedness – Department of Homeland Security
Instructor July 2016 – August 2022
Delivered advanced classroom and field-based training to law enforcement, fire, and EMS personnel from across the United States, focusing on terrorism response and CBRNE incidents.
Key Contributions:
Instructed first responders in the proper use of PPE and SCBA during hazardous operations
Trained personnel in hazardous materials recognition technologies
Delivered hands-on instruction in decontamination techniques for CBRNE incidents
Taught evidence collection and crime scene processing within contaminated environments
Evaluated student performance during simulated terrorism-related response scenarios
Supported national preparedness initiatives through standardized DHS curriculum delivery
New York City Police Department
Police Officer / Instructor July 1996 – September 2016
Served in multiple operational and instructional roles over a 20-year career with the NYPD.
Responsibilities & Achievements:
Performed patrol duties in Manhattan and Brooklyn precincts
Conducted short-term criminal investigations using departmental databases
Maintained advanced proficiency in firearms and tactical operations
Ensured compliance with evolving State, City, and Federal laws
Provided instruction and mentorship to recruits and probationary officers
New York City Police Department – Counterterrorism Bureau
Counterterrorism Officer August 2011 – August 2015
Selected for specialized counterterrorism assignment focused on detection, deterrence, and response to terror-related threats.
Specialized Training & Capabilities:
Terror attack response tactics and threat recognition
Explosive trace detection and IED/suicide bomber recognition (Homeland Security)
Radiation detection and mitigation operations
Chemical and biological warfare response tactics
ALERRT Level I and Train-the-Trainer (TtT) Instructor certification
New York City Police Department – Police Academy
Police Officer / Academy Instructor July 2006 – July 2009
Trained new recruits in law enforcement fundamentals, defensive tactics, and self-defense
Instructed probationary officers in Police Science and applicable law
Served as a Field Training Officer (FTO) for newly graduated officers
United States Army
Enlisted Soldier September 1988 – September 1996
Completed Basic Training at Fort Dix, New Jersey
Gulf War Veteran (1990–1991)
Served as an Attack and Utility Helicopter Mechanic
Certifications & Credentials
ALERRT Level I & Train-the-Trainer (TtT) Instructor
Commercial Pilot Certificate
Aircraft Mechanic Rating
State of Texas Level III Security Officer (Handgun & Shotgun Certified)
Awards & Recognition
Gulf War Veteran
September 11, 2001 Responder/Survivor
Recipient, New York Legion of Honor – Medal of Merit
Decorated multiple times for Outstanding Service with the NYPD
References available upon request
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