ANAHEIM, Calif., Aug. 6 -- The Boeing Co. is selling its Sensors & Electronic Systems business to DRS Technologies Inc. for an unspecified figure. More than 300 Boeing employees will transition to DRS. The sale is expected to be complete later this year. The business is part of the Battle Management Command, Control and Communications & Strategic Systems business, a component of Boeing Space & Communications. The Sensors & Electronic Systems business is responsible for a variety of government-contracted programs, such as Thermal Imaging Surveillance Systems, Mast Mounted Site, and an electro-optical aircraft landing system for installation aboard aircraft carriers. Additionally, it provides advanced electronic components for both defense and commercial uses. Focal plane arrays developed and manufactured at the site are an integral part of the Hubble Space Telescope.