On November 4, 2002, “NSA [National Security Agency] intercepted al Qaeda’s Yemen operations chief [Abu Ali al-Harithi] as he held a lengthy conversation on his satellite phone while driving through the desert in the so-called Empty Quarter of eastern Yemen. Using the locational data provided by the NSA, a CIA unmanned Predator drone was immediately dispatched from Camp Lemonier in Djibouti to the location. The drone quickly found the convoy just where NSA said it would be. The Predator fired a Hellfire missile at the lead vehicle, killing the al Qaeda official instantly.”
– Matthew M. Aid, The Secret Sentry, Page 233