Craig Nixon

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.

Constellis Group, Inc. provides administrative management and general management consulting services. Its capabilities include risk management and crisis response, security, humanitarian, training, technology, and logistics and support services. The company was founded in 2010 and is headquartered in Reston, VA.

Academi LLC provides training, logistics, and program management services. It specializes in client-based training services, including mobile training teams’ deployment, client facilities designing and building, training materials and instructors supply, export compliance requirements oversight, and embedded trainer and mentor services; scenario-based training; and supply chain services, such as sourcing/procurement, manufacturing, required regulation, transportation, warehousing, inventory management, equipment maintenance, and risk analysis services. The company was founded in 1997 and is headquartered in Arlington, VA.