There were four.
The two that were flown into the world trade center, the one that was flown into the pentagon, and the one that crashed into a field in Pennsylvania.
There was 4 planes:
-American Airlines flight 11 that was flown in the north tower of the world trade center.
-United airlines flight 175 that was flown in the south tower of the world trade center.
-American airlines flight 77 that was flown into the pentagon.
-United airlines flight 93 that crashed in Pennsylvania.
If he says there were 5 planes then it is his burden of proof. At the very least he needs to name each of the flights.
Four
Me and my dad are having a very big argument at the moment. He says that there were 5 planes hijacked on September 11, 2001. Is he correct?
