Read it again. In about the middle it says -- "Beamer said her husband placed the call at 9:45 a.m. Tuesday and told Robinson that there were three knife-wielding hijackers on board, one who appeared to have a bomb tied to his chest with a belt. "
I'm with you. IMO, they had no bombs. It was a wonderful scare tactic to keep everyone in their seats!!! These people were professional.
If the all the passengers were smart enough to jump these bastards(but none of us are under these averse circumstances) they'd probably all be alive today. Hind site is wonderful!!!