Leadership at TANGENT

Roxanne Brown


Roxanne Brown is a brand and marketing strategist who has partnered with Tangent Group International to grow their reputation and professional brand, human-to-human. After spending nearly a decade working in the oil and gas industry for multi-billion dollar companies and startups, she knows what truly drives business. 

Roxanne has dealt with major corporations such as Anadarko, Devon Energy, Chesapeake, Marathon, Penn-Virginia, Pioneer Natural Resources, QuickSilver Resources, and foreign companies such as Tokyo Gas and Sinochem.  Additionally, her research and field work were an integral part in the discovery of the Eagleford Shale formation in the Western Gulf Basin.

Roxanne holds a BS in molecular and cellular biology from Texas A&M University.

David Brown


David Brown has several decades of experience in sales and business development while working in the RainSoft organization and has built his experience in management and corporate relationship in the oil and gas industry.  David began his training in self defense and firearms under former Navy Seal, Jason Pike, and expanded his training to become a multi-discipline firearms instructor.  David is TCOLE (Law Enforcement) certified in Dignitary Protection, Combat Pistol, Patrol Carbine, and SWAT.  David worked his way up to regional detail leader at Pinkerton staffing and managing small and large protection details for many of the Fortune 1000 companies.  Since founding Tangent Group International, David has developed client relationships from coast to coast and specializes in the executive protection and executive security sectors.

Pete Haas

Director of Uniform Security Services

Pete Haas began his career in security as an investigator with Pinkerton when it was still a family-owned company.  From there, Pete worked his way up through various positions in the security industry and earned the position of Managing Partner at Allied Universal in 2015.  Pete brings over forty years of relevant industry experience into the Tangent system.  His senior position within the company gives him the freedom to shape the uniform division in a way that mirrors the excellence and upscale level of service already provided by Tangent’s executive teams. With his focus firmly on quality client relationships, Pete will have the ability to provide Tangent customers with an upgraded level of uniform security service that is unhampered by common internal pressures.  

Kyle Weaver


 Kyle Weaver has over 30 years of experience in executive security and event management.  He has obtained extensive knowledge operating worldwide working for many of the Fortune 500 companies and religious organizations in executive protection.  He has trained in the US, Israel, Austria, Germany, and the UK and has accompanied clients to 72 countries and counting.  Kyle is an invaluable asset to Tangent when it comes to advance planning and liaising with clients and VIP's. 

Cary Williams

Area Manager

Cary Williams spent 18 years providing personal protection to private families, executives, pastors, high risk news crews and anchors, and corporate events. He has also provided protection for high risk locations and high profile sports figures.  

Cary specializes in advance planning, assessments, and oversight.

Cary brings 30+ years of experience in business development, regional management, and risk management from various roles at Citifinancial, GMAC and other major organizations.

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