General Dynamics has completed its acquisition of Spectrum Astro, Inc. of Gilbert, Ariz. Terms of the transaction were not disclosed.

Spectrum Astro manufactures and integrates space systems, satellites and ground-support equipment, and has approximately 525 employees. It is now part of General Dynamics C4 Systems, which has nearly 3,400 employees in Scottsdale, Ariz.

"Spectrum Astro brings General Dynamics valuable experience in missile- defense and key NASA space business segments, and further enhances our ability to meet requirements for satellite-based systems in support of a network- centric approach to warfighting," said Mark A. Fried, president of General Dynamics C4 Systems.

"We are pleased to welcome Spectrum Astro employees to our team and look forward to applying their expertise and capabilities as part of General Dynamics."

General Dynamics C4 Systems is a leading integrator of secure communication and information systems and technology and has more than 7,000 employees worldwide.