ADS is a federally certified Disadvantaged Business Enterprise and Minority Business Enterprise, headquartered in Baltimore, MD with client-site offices located throughout the US. We specialize in providing high impact and high value risk-based system safety and mission assurance consulting services to public and private clients alike in the public transportation, aerospace, and defense industries. Employing more than 40 engineers, ADS is one of the largest consultants in the public transportation industry dedicated to providing system safety and security services. It is our core belief that safer systems cost less, and safer organizations deliver more. As such, it is our mission to partner with our clients to deliver enduring products and services to both meet regulatory requirements, and to fundamentally improve organizational safety performance, capabilities, and culture. Our risk-based services approach is based on the principles of Safety Management Systems (SMS) and is the cornerstone of our business. It is also what differentiates ADS from our competitors, who too often focus on inconsequential program factors, making recommendations without fully understanding how they can be implemented effectively, or the system-wide impacts they will have on the organization as a whole. With every assignment, ADS seeks to understand the organization in its entirety, from the most senior executives to the most junior front-line employees, across each department, and across each role and responsibility, with the end user in mind. Through this approach, we are able to provide products and services that account for the organizational uniqueness of our clients and the departmental, procedural, and hierarchical similarities and differences therein.