The deals come days after the Transportation Security Administration announced airport screeners will be examining remote control toys in carryon luggage due to concerns that they could be used to detonate bombs. Passengers -- including children -- carrying these toys may have to go through secondary screening.

Following pilot testing at Washington's Reagan National, New York's JFK, Los Angeles International and Albuquerque International airports, the Transportation Security Administration awarded $9.3 million and $21 million deals to Rapiscan Systems -- an OSI Systems Co. -- and Smiths Detection, a subsidiary of U.K.-based Smiths Group PLC, respectively, to provide 125 X-ray machines. The new systems offer baggage handlers better images than the single-view X-ray system currently used by the agency.

Additionally, TSA purchased explosives detection equipment worth $7.6 million from Analogic Corp., which makes health and security imaging equipment and 8 units from Reveal Imaging Technologies for $5.6 million. The government purchased 12 of Analogic's Cobra units, which use computer tomography to screen baggage for explosives.

The agency also paid $3 million for 12 units from Planning Systems Inc., designed to find concealed items on people. It also awarded a $1.7 million contract for 37 of Spectrum San Diego's devices for screening casts and prosthetics.

TSA paid the Nomadics Inc. subsidiary of ICx Technologies Inc. $3.4 million and Smith Detection $650,000 for hand-held explosive detection scanners.

"These purchases will significantly enhance our suite of technologies while improving security," said TSA Administrator Kip Hawley in a statement. "Better technology leverages the skills of our officers more efficiently and improves our ability to adapt in real time to changes in the threat environment."

Over the next two years, TSA is expected to make additional purchases, the agency said.

Shares of Analogic Corp. fell 50 cents to $64.84 in Wednesday afternoon trading. OSI Systems gained 30 cents at $23.80.