Is it a harmless parcel or a bomb, an innocent letter or a
drug shipment? A new terahertz scanner is capable of detecting illicit drugs
and explosives sent by post without having to open suspicious packages or
envelopes.
Alert at Schloss Bellevue. A suspicious letter addressed to
German President Joachim Gauck has been detected, which might contain a bomb.
Not willing to take any risks, the bomb squad is called out to destroy the
package.