WASHINGTON – Two large U.S. aerospace firms are mourning the loss of employees on the flights that crashed into the World Trade Center in New York and the Pentagon during the terrorist attacks of Sept. 11.

Three Boeing Space and Communications engineers were en route from Washington, D.C. to Los Angeles when their plane crashed into the Pentagon.

Those employees are:

• Dong Lee, 48, engineer/scientist for Boeing Integrated Defense Systems, Anaheim, Calif.
• Ruben Ornedo, 39, senior project engineer, Boeing Satellite Systems, El Segundo, Calif.
• Chandler "Chad" Keller, 29, senior project engineer in propulsion, Boeing Satellite Systems.

Phil Condit, Boeing’s chairman and chief executive officer, extended his "deepest sympathy" to the families of the victims in a written statement issued after the families had been notified.

Raytheon Co. lost four senior employees who were onboard the flights that hit the Pentagon and the World Trade Center.

Those employees are:

• Peter Gay, 54, vice president of operations for Raytheon Electronic Systems, Andover, Mass.
• Stanley Hall, 68, director of program management for Raytheon Co., Arlington, Va.
• David Kovalcin, 42, senior mechanical engineer for Raytheon Electronic Systems, Tewksbury, Mass.
• Kenneth Waldie, 46, senior quality control engineer for Electronic Systems, Tewksbury, Mass.

"Our hearts go out to the families, friends and co-workers of those we have lost, and all who perished," said Dan Burnham, Raytheon chairman and chief executive officer.