Meet the Experts

Your Private Security Team

Our team of security experts has decades of combined experience serving in various U.S. government organizations, including the FBI, CIA, and Department of Defense. Many are former military and certified SWAT operators and have protected high-profile officials both domestically and internationally. This private security team is highly qualified in safety, security, and protection, and supports the international network of agents committed to QS Security™.

jack vanderstoep

Senior Vice President

Before becoming vice president of global security at NetJets and senior vice president of QS Security, Jack was a certified SWAT operator and spent more than 20 years with the FBI working on counterterrorism efforts and undercover operations. He was the lead agent for the first successfully prosecuted terrorism case post-9/11 and was assigned to the CIA from 2003-2007, working on counterterrorism matters. His experience as a special agent brings invaluable expertise to our leadership.



With over 30 years of law enforcement experience, David spent 10 years in local law enforcement and 20 years with the FBI as a Special Agent. David’s last assignment with the FBI was as a senior SWAT team leader, primary firearms instructor, primary tactical instructor, primary defensive tactics instructor, active shooter instructor, and civilian response to active shooter events instructor. As the Senior SWAT team leader, David was responsible for several high-level government officials’ protective details, domestically and overseas, in addition to day-to-day operations and training. He also gained vast experience in both special event security planning and threat assessment.



Upon graduation from West Point as a U.S. Army Infantry Officer, Greg spent over 25 years leading cross-functional FBI and Army teams as an Army Ranger Instructor, FBI SWAT team member, certified EMT, and Joint Terrorism Task Force Supervisor. He led investigative teams in emergency management and crisis-response, which succeeded within complex, time-sensitive, reactive environments. Greg has extensive experience in special event leadership, executive protection, and global operations.

Contact Us

To ensure complete peace of mind for you and your travel companions, simply call us or provide your information here and a QS Security representative will contact you within 48 hours.


Personal data will be processed, stored, and used in accordance with the terms set out in our privacy policy. By submitting the form, you consent to such processing.