Agents with the Food and Drug Administration's Office of Criminal Investigations search for nitrous oxide tanks in the back of a warehouse during a joint operation dubbed "No Laughing

 

              Agents with the Food and Drug Administration
Agents with the Food and Drug Administration's Office of Criminal Investigations search for nitrous oxide tanks in the back of a warehouse during a joint operation dubbed "No Laughing Matter" with the Los Angeles County Sheriff's Department in Los Angeles Friday, March 22, 2013. Authorities say the use of nitrous oxide as a recreational drug has grown from a rave phenomenon to mainstream use in recent years propelled by the ease of social media to advertise illegal parties, especially among teenagers. (AP Photo/Damian Dovarganes)