Oscar Hermosillo
Brownsville,TX
Summary
Detail-oriented federal law enforcement support professional experienced in U.S. Border security and immigration operations. Expert in detainee processing, property accountability, and fleet management. Supported Operation Lone Star, ensuring operational readiness and effective logistical support in high-security environments. Recognized for professionalism and ability to maintain focus under pressure.
Overview
1
1
Certification
5
5
years of professional experience
Work History
Mission Support Specialist
Texas Military Department
Harlingen, Texas
02.2026 - Current
- Provided mission support services to ICE personnel by ensuring the availability and accountability of government property equipment, and operational resources.
- Managed agency fleet assets using Fleet Wave, maintaining vehicle records, scheduling maintenance, and ensuring compliance with DHS fleet management policies.
- Utilized Sunflower Asset Management System to receive, track, inventory, transfer, and dispose government property in accordance with federal regulations and agency policies.
- Collaborated with supervisors, logistics personnel, and field offices to support daily operations and accomplish organizational objectives.
Infantryman
Texas Military Department
Brownsville, Texas
02.2021 - Current
- Maintained accountability for personnel, weapons, equipment, and supplies.
- Monitored communication systems for timely orders, instructions, and alerts.
- Collaborated with leadership to develop strategies for mission execution and resource allocation.
- Mentored junior soldiers on basic infantry tactics and principles of teamwork.
ICE Detailee
Texas Army National Guard
Edinburg, Texas
08.2025 - 01.2026
- Supported U.S. Immigrations and Customs (ICE) personnel in detainee processing and administrative case management, ensuring compliance with regulations.
- Partnered with law enforcement agents to improve detailing processes, contributing to increased operational efficiency.
- Demonstrated strong attention to detail, professionalism, and the ability to work effectively in high-tempo operational environments.
- Ensured accurate entry of detainee information into government databases by collecting and verifying data meticulously.
- Trained newly assigned personnel and future agents on processing procedures, government systems, and operational requirements.
Security Specialist
Texas Military Department
Brownsville, Texas
02.2025 - 08.2025
- Exercised Title 8 immigration authority while enforcing applicable federal immigration laws and procedures.
- conducted surveillance and observation of assigned areas to identify suspicious, illegal, or unusual activity along the border.
- followed established safety, security, and operational procedures while working in high-risk environments.
- observed and accurately reported activity to U.S Border Patrol and other law enforcement personnel to support decision-making.
Mobile Response Security Specialist
Texas Military Department
McAllen, Texas
02.2022 - 03.2025
- Collaborated with teams on missions to improve security and operational effectiveness, contributing to successful force protection and counterdrug operations.
- Monitored security systems and responded to alarms and incidents.
- Conducted training sessions for staff on safety procedures and emergency protocols to ensure preparedness and compliance during critical incidents.
- Supported law enforcement at local, state, and federal levels to deter illegal immigration and combat criminal activity along the southern border, enhancing interagency cooperation.
Education
High School Diploma -
Porter Early College High School
Brownsville, TX07-2021
Skills
- Detainee processing
- Fleet management
- Asset management
- Surveillance techniques
- Compliance reporting
- Resource management
- Attention to detail
- Adaptability and flexibility
Certification
- Title 8 Immigration Authority
- 287g Certified
Accomplishments
- NATIONAL DEFENSE SERVICE MEDAL
- ARMY SERVICE RIBBON
- TEXAS HOMELAND SERVICE MEDAL
Timeline
Mission Support Specialist
Texas Military Department
02.2026 - Current
ICE Detailee
Texas Army National Guard
08.2025 - 01.2026
Security Specialist
Texas Military Department
02.2025 - 08.2025
Mobile Response Security Specialist
Texas Military Department
02.2022 - 03.2025
Infantryman
Texas Military Department
02.2021 - Current
High School Diploma -
Porter Early College High School