How many terrorists were on the second plane to hit the World Trade Center?
Flight 175: As the World Watched:  It covers the final moments of the passengers and crew on board United Airlines Flight 175, which was the second commercial airliner to strike the World Trade Center, impacted with the South Tower, and was the most visually documented (both photographed and filmed) flight during the September 11 attacks. United Airlines Flight 175:  On September 11, 2001, the Boeing 767-200 operating the route was hijacked by five al-Qaeda terrorists and flown into the South Tower of the World Trade Center in New York City, killing all 65 people aboard and an unconfirmed number in the building's impact zone.
five