TECH TALK Deputy Defense Secretary Ashton B. Carter, left, speaks with former U.S. Sen. Sam Nunn of Georgia and retired Marine Corps Gen. James L. Jones, former national security advisor, before addressing audience members at the Sam Nunn Policy Forum at Georgia Tech Research Institute in Atlanta, Ga., April 16, 2012. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 019378-R-GJS35-980.jpg Photo Gallery