Richard "Mack" Machowicz is best known as the host/producer of Discovery Channel's FutureWeapons and Weapons that Changed the World. He was also the host of Spike TV's Deadliest Warrior and History Channel's Ultimate Soldier Challenge. Mack offered his military and weapons expertise as a key contributor to two of History's mega-hit miniseries, America: The Story of Us and Mankind:The Story of All of Us.