People at a Denver party early this month celebrate the recognition of an amendment to the Colorado constitution legalizing recreational use of marijuana.
Credit Brennan Linsley / AP
Parents drill certain warnings into their children: don't drink, don't smoke and don't do drugs. But those conversations have gotten tougher now that two states, Colorado and Washington, have decriminalized some recreational marijuana use.
Now, U.S. Customs and Border Protection agents say they recently discovered 30 large cans of marijuana in a field near Yuma, Ariz., — and that the barrels apparently landed there after being fired from a pneumatic-powered cannon 500 feet away in Mexico.