TRAVEL CHAT U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, right, speaks with U.S. Army Gen. Lloyd Austin, commander of U.S. Forces-Iraq, aboard a C-17 Globemaster en route to Baghdad, Aug. 1, 2011. Mullen is on a five-day USO tour with comedian Jon Stewart, NBA Legend Karl Malone and magician David Blaine visiting troops in Afghanistan and Iraq. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 077478-I-EYB81-436.jpg Photo Gallery