TSA Security Measures Not New

The technology has been around for years but TSA has found a new way to use it. Explosives Trace Detection (ETD) equipment, is small enough to carry around so why not do just that? According to the TSA the ETD equipment is about the size of a large suitcase. Officers can now roll the machines through terminals and randomly test passengers for traces of explosives. It's just another layer of security and unlike body scanners and pat-downs this is much less intrusive.