This 85-year-old Special Forces legend has one of the most badass military resumes we've ever...

While other senior citizens were enjoying a quiet life in retirement, 71-year-old Billy Waugh was hunting for Osama bin Laden in Afghanistan and blowing Taliban fighters to smithereens.

As a member of a CIA team sent in shortly after the 9/11 attacks, Waugh battled militants at Tora Bora and helped bring about the collapse of the Taliban. It seemed a pretty good ending to a career that featured combat in Korea and Vietnam, surveilling Libya's military, tracking international terrorists, and God-only-knows-what-else for the CIA.

Waugh was born in 1929 in Texas and enlisted in the U.S. Army in 1948. After completing airborne school he was assigned to the 82nd Airborne at Fort Bragg, North Carolina. But he was eager to get into combat, and he reenlisted in 1951 so he could get to the 187th Airborne Regimental Combat Team in Korea. Then the Korean war ended, and his career veered off into "black ops" territory once he joined the Special Forces in 1954.

His life after that reads like the most badass resume we've ever seen: Five tours with Special Forces "A" teams in Vietnam and Laos where he was wounded multiple times, working for the CIA's Special Activities Division in Libya, preventing the Russians from stealing classified missile secrets on the Kwajalein Atoll, and helping to hunt down the infamous terrorist Carlos "The Jackal," which he later detailed in a book.