Providers of security-related protects, from cargo screening devices to barriers to protect buildings, say they are getting an enormous amount of inquiries – and sales – in the wake of last week’s terrorist attacks.

OSI Systems reports that a foreign customs agency has ordered two of its Rapiscan 546 Dual View Large Cargo systems, representing approximately $1.7 million in sales. Those systems will be installed in two major transportation hubs and should be completely operational by March of next year, OSI said.

OSI said the Rapiscan large cargo scanning systems have gained increasing interest for use in preventing the infiltration of drugs, weapons and other contraband, as well as for use by government agencies in catching misrepresentations on shipping manifests, which deprive governments of tax revenue. The scanners are designed for locations such as air and sea ports, customs facilities, mail, freight or courier service installations, handling air cargo pallets to truck loads as large as 10.5 feet high and 10.5 feet wide, with a maximum weight of 60 tons.

Delta Scientific of Valencia, CA reports that it is getting rush delivery requests for its barrier and bollard systems, which are designed protect personnel and buildings from vehicle attacks

“We've had over 100 inquiries in the District of Columbia alone requesting we send anything we’ve got in stock,” David Dickinson, the company’s senior vp.

Delta’s barriers are designed to stop and destroy a truck weighing 15 tons traveling 50 mph. The barricades can be raised or lowered at will to stop traffic or let it through. In an emergency, the thick steel plates or “bollards” pop out of the ground within 1.5 seconds.