U.S. Army Green Berets will help train naval infantry marines in Mexico. Their mission is to help stop the flow of illegal drugs and guns.

Lt. Col. Scott Mann is a retired Green Beret in the US Army as well as the president of MannUp Leadership Training. He describes how the Green Berets and the US Navy SEALs are different.

Read more posts in the series » Joining the U.S. Army Special Forces involves more than elite combat training. The Green Berets specialize in unconventional warfare - i.e. working with guerrillas ...