PHONE 512-206-0515                               

TOLL FREE 1-866-513-4202           FAX 512-452-6690 

                                                                    

Alan Trevino- President & CEO


An honorably retired 20 year veteran with the Texas Department of Public Safety, Alan Trevino holds a Master Peace Officer License and is certified by the Texas Commission on Law Enforcement Officer Standards and Education. He also is a certified firearms and pursuit driving instructor.

Mr. Trevino served as the protection detail leader for former Governor and President George W. Bush and family. When Mr. Bush campaigned for President of the United States, he was a team leader for Mr. Bush’s protection detail. This required him to assign manpower, complete equipment logistics, analyze costs, and coordinate specialized training and instruction for the team members.

He has also served as a personal protection officer to many celebrities.

He is licensed in guard services, investigations and consulting, personal protection, and is an instructor for the Sentry Security training academy.


Mr. Trevino served as the State Board President for the ASSIST organization and was instrumental in increasing membership and establishing a true 501C3 charitable organization, COTSO, that helps fallen officers and officers who have been injured or displaced by catastrophic events.

Field Supervisors


Austin/Central Texas  - Cpt. Hall, Lt. White
San Antonio- Cpt. Balleza / Sgt .Bartlett


Our field supervisors fill a key role, they are responsible for all aspects of Sentry Security guard services between the hours of 5PM to 7AM Monday-Friday and 24x7 on weekends and holidays. Sentry Security supervisors are your first line of accountability.

Our supervisors are trained to inspect all posts and do random physical checks of officers in the field. They are empowered to take action and resolve issues as they occur without waiting for approval from management.

todd white- Accounts Manager / director of operations


Todd White comes to Sentry with over 30 years of experience in security and law enforcement. Todd started his own security company in Nebraska, which he successfully operated for 13 years before selling it. Todd later became the Director of Operations for Public Safety Services, which was purchased by Yale Enforcement. Todd then became the Branch Manager for Yale Enforcement in Lincoln, Nebraska. He later moved to Texas, where he served as the Houston Branch Manager and then the Austin Area Director. He also served as the Security Director for Time Warner Cable in Houston. His latest role was as Director of Operations at a local security and private investigations firm in Austin.

Alicia Beck- Office Manager / Administration


Alicia Beck is Sentry's Office Manager and serves as the Administrative Assistant to the President. She has over 8 years experience as a Security Company Administrator. Miss Beck is responsible for all administrative duties including all new hires, payroll, invoicing, training schedules, ordering uniforms and equipment, all shipping and receiving and all tasks associated with running the office.

Miss Beck is also instrumental in making sure all employees are DPS compliant and that all forms and applications are submitted correctly.