Chip Somodevilla
US Defense Secretary Leon Panetta, pictured here on April 19, recalled the "fingernail-biting" wait a year ago as US special forces flew into Pakistan and killed Osama bin Laden in a hair-raising, high-risk mission. As director of the Central Intelligence Agency at the time, Panetta was in a pivotal position during the operation, which unfolded in utmost secrecy May 2.
