In 1997 the National Defense Industrial Association (NDIA) was founded by reason of a merger between the American Defense Preparedness Association (ADPA) and the National Security Industrial Association (NSIA) which was founded in 1944. The NDIA is a non-partisan, non-profit association with a mission to provide a legal and ethical forum for the interchange of ideas between government and industry to resolve industrial problems of joint concern. The primary interest are the business and technical aspects of the government-industry relationship, encompassing government policies and practices in the entire acquisition process, including research and development, procurement, logistics support, and many technical areas. The NDIA headquarters are located in Arlington, Virginia.
The Lone Star Chapter is based in North Texas and covers the surrounding region.