Every package is screened in some way, but very few are x-rayed. They are looking for drugs, currency, stolen antiquities, stuff like that. It is hard for a lay

Every package is screened in some way, but very few are x-rayed. They are looking for drugs, currency, stolen antiquities, stuff like that. It is hard for a lay-person to look at a collection of electronics and know if it is the guts of a VCR or an advanced spy drone.