Inside job

An enterprising UPS driver devised an interesting method of smuggling cannabis. He would have the herb shipped to businesses along his route and simply sign for the packages himself. They were found out when "investigators began tracking the packages after a narcotics team discovered their contents while they were on a conveyor belt at Los Angeles International Airport."

What I want to know is why our government is spending time and money trolling for narcotics at the airport instead of looking for bombs? No one has ever blown up a building using marijuana.