Communications & Power Industries LLC, headquartered in Palo Alto, California, is a subsidiary of CPI International Holding Corp. and CPI International, Inc. and a leading provider of microwave, radio frequency, power and control solutions for critical defense, communications, medical, scientific and other applications. End-use applications of these systems include the transmission of radar signals for navigation and location; transmission of deception signals for electronic countermeasures; transmission and amplification of voice, data and video signals for broadcasting, Internet and other types of commercial and military communications; providing power and control for medical diagnostic imaging; and generating microwave energy for radiation therapy in the treatment of cancer and for various industrial and scientific applications.