HIJACKED UNITED AIRLINES FLIGHT 175 FLIES TOWARD WORLD TRADE CENTER SOUTH TOWER, 2001-09-11 (photo)

Hijacked United Airlines Flight 175 (L) flies toward the World Trade Center twin towers shortly before slamming into the south tower (L) as the north tower burns following an earlier attack by a hijacked airliner in New York City September 11, 2001. The stunning aerial assaults on the huge commercial complex where more than 40,000 people worked on an ordinary day were part of a coordinated attack aimed at the nation's financial heart. They destroyed one of America's most dramatic symbols of power and financial strength and left New York reeling. FR05070027 SECOND OF SEVEN PHOTOGRAPHS REUTERS/Sean Adair SV