Faisal Shahzad reportedly admits he planted the Times Square bomb as payback for a U.S. attack near his home in Pakistan.
It was packed with fireworks from this Pennsylvania store.
Phantom Fireworks V.P. William Weimer said, "This whole enterprise was destined to failure from the beginning."
But some experts say a poorly made bomb doesn't rule out Al Qaeda or the Taliban because the U.S. has killed many of the groups' best explosives trainers.
Terrorism Analyst Roger Cressey said, "The people they are now putting in may not be as capable, maybe that is why Shahzad couldn?t get this bomb to work."
Authorities fear Shahzad may be a new breed of terrorist?trained by organized groups, but operating on their own.
Commander of U.S. Central Command, General David Petraeus said, "You had the planes flown into tall buildings. What is the next initiative going to be? And certainly this is among those."
A surveillance team watching Shahzad on Sunday lost him. Officials say he drove to JFK Airport with a gun in his car.
The no-fly list that failed to prevent him from boarding now must be updated every two hours-something the U.S. tried before.
Former DHS Secretary Michael Chertoff said, "The airlines fought it because they didn't want to bear the expense of reconfiguring the system."
When arrested, officials say Shahzad replied, quote, "I've been expecting you."