Vice President Biden administers the oath of office to Secretary Hagel as his wife Lilibet holds the Bible Vice President Joe Biden, right, administers the oath of office to Secretary of Defense Chuck Hagel as his wife Lilibet holds the Bible during a ceremonial swearing in at the Pentagon on March 14, 2013. Hagel is the 24th secretary of defense. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 952259-K-UBR83-202.jpg Photo Gallery