Lockheed Martin (LMT) - Get Report reached a definitive agreement to acquire ISX of Camrillo, Calif.

Terms weren't disclosed, but Bethesda, Md.-based defense contractor Lockheed said ISX makesmilitary decision systems and other information technology solutions for government customers.

"ISX has gained broad recognition for innovation as a research and development leader, to include winning two consecutive awards as DARPA's contractor of the year -- a first for any company," said Lockheed chief Bob Stevens. "This acquisition complements and accelerates our growth in decision systems, distributed collaborative military operations, autonomous systems, and knowledge management."

The transaction is expected to close in June.