54: Osama bin Laden's age at the time of his death

In 2011, the CIA-led Operation Neptune's Spear succeeded in killing Osama bin Laden, the founder of al-Qaida. At the time of his death, bin Laden was 54 years old. During his subsequent address to the nation, Obama claimed the success of the operation was a “testament to the greatness of our country and the determination of the American people.”