I had received a briefing years ago while working at the National Defense University on how drug traffickers in Columbia were using submarines and semi-submersibles to transport drugs. Back then the submarines were slow, small, and crudely built. Some were powered by car batteries to avoid surfacing and exhaust. Well, I was even more shocked at their speed and sophistication now. This video shows craft that are getting bigger and are anything but slow. The drug trade is not what it was under Pablo Escobar but criminals are often times more sophisticated than the authorities that are chasing them.