Retail sale of marijuana begins in Colorado
COLORADO -- The first marijuana retail stores officially opened in Colorado.
The first sale went to an Iraq war veteran suffering from PTSD.
Customers who are 21 or older in Colorado can now buy pot like alcohol.
The new shops are already drawing out-of-state patrons, who say they are tired of the harsh penalties in their home-states.
Travelers from out of state are limited to buying a quarter ounce of marijuana or less.
Colorado residents can buy up to one ounce.