Exhibit 21.1 SUBSIDIARIES OF THE COMPANY Tri-Star Holdings, Inc., an Ohio corporation Tri-Star Electronics International, Inc., an Ohio corporation Tri-Star Technologies, Inc., an Ohio corporation Cory Holdings, Inc., an Ohio corporation Cory Components, Inc., a California corporation Elsinore Aerospace Services, Inc., a California corporation Elsinore Engineering, Inc., a Selaware corporation Tri-Star Electronic Europe S.A., a Swiss corporation Tri-Star Technologics, Inc., a California general partnership Hollingsead International, Inc., a California corporation Hollingsead International, Ltd., a U.K. corporation Aerospace Display Systems, Inc., a Delaware corporation