 Colombia's Congress passed a law in June 2009, punishing the building of semi-submersible vessels with up to twelve years in prison, and transporting drugs in them with up to fourteen years in prison.National security issues related to torpedo style cargo containers, semi-submersible vessels, and submarines used for smuggling and/or terrorist activities were reviewed in an August 2012 article in Homeland Security Affairs.Also presented are behaviors indicating shifts in methods of operating by drug traffickers and the corresponding risk to national security.