Armed/Unarmed Guards & Mobile Patrol Retail Loss Prevention Surveillance & Monitoring Solutions Investigative Services K-9 Security Services Protection. Investigation. Surveillance ASC is a leading provider of protective and investigative services in the Washington, DC Metropolitan Area. We are licensed and bonded and staff the region's best security guards, investigators, detectives, security canines, and K-9 handlers, loss prevention specialists, and digital CCTV installation technicians. We provide a broad range of security services, including Armed and Unarmed Security, Mobile Patrol Services, Electronic Surveillance & Monitoring Solutions, Private Detective & Investigative Services, and K-9 Security Services, and retail loss prevention. Our services are tailored to each client's needs as our clients represent a variety of markets from government to commercial to construction. Consequently, we can accommodate special staff needs, 24/7 scheduling requirements, and security staffing needs in classified or secure environments. Contact us for more information on ASC services.