Bernard Champoux

Part of Castellum, Inc., Mainnerve Federal Services, Inc. is a government services company based in Gallatin, TN. Mainnerve Federal Services provides mission-critical national security and warfighter support solutions to the armed forces and other federal agencies. The company possesses a top secret facilities clearance and its key personnel have top secret personal clearances. MFSI Government Group is committed to increasing return on investment by facilitating a dynamic value analysis and improvement process that optimizes performance, cost, and time. The company was founded in 2010 by George M. Tronsrue and was acquired by Castellum, Inc. on February 11, 2021 for $1.39 million.

National Defense Industrial Association engages in the defense and national security education. It offers courses such as configuration and data management certification program, defense systems acquisitions management, mastering business development, and certified modeling and simulation professional certification program. The company was founded in 1919 and is headquartered in Arlington, VI.