"Does his resume go beyond being in a video on the interweb?"
Dude! He's the magpul guy.
Chris Costa's resume is impressive in terms of firearms training and risk management, as well as in several other unique skillsets. He's has spent a number of years in the private sector at Applied Marine Technologies, Inc. ("AMTI") and Linxx on assignment with the U.S. Department of Homeland Security's Risk Management Division (RMD). At AMTI and Linxx, he specialized in chemical, nuclear, biological and radiological environments and taught Police Tactical Operations-CBRNE (chemical, biological, radiological, nuclear or high-explosive) environments and provided red-team vulnerability assessments on critical infrastructures for the US Government.
Prior to that, he spent 12 years with the US Coast Guard, conducting law-enforcement and special-operations missions in Europe, the Middle East and South America