Meet THAAD, the bloated defense project that might protect Guam from a North Korean missile strike

The United States is moving the anti-missile system known as THAAD (Terminal High Altitude Area Defense, seen in the  video above) to the Pacific island of Guam after North Korea said on Wednesday it had “ratified”  a nuclear strike on the United States. Announcing the decision, Defense Secretary Chuck Hagel said that North Korea presents a “real and clear danger.”