L-3 Communications has agreed to acquire the Detection Systems business of PerkinElmer, for approximately $100 million in cash. The acquisition is expected to close by the end of the first quarter of 2002 and is subject to clearance under the Hart-Scott-Rodino Antitrust Improvements Act and other customary conditions. Detection Systems is expected to be accretive to L-3's earnings in 2002. PerkinElmer's Detection Systems business offers X-ray screening for three major security applications: aviation systems for checked and oversized baggage, break bulk cargo and air freight; port and border applications including pallets, break bulk and air freight; and facility protection, such as parcels, mail and cargo.