Thousands of spectators watched in horror as a Greek fighter jet plunged into the ground during an air show, killing both pilots on board. The F-4 Phantom was flying just meters above the ground during a low-altitude maneuver when it crashed and erupted into flames, sending a massive plume of black smoke into the sky. "We were all stunned. It hadn't been airborne for more than three minutes," one eyewitness says. No civilians were hurt. Organizers canceled the rest of Athens Flying Week, while Greece's air force declared three days of mourning.