Adis Medunjanin received the sentence Friday in federal court in Brooklyn.
Prosecutors had accused Medunjanin and two high school classmates of receiving al-Qaida training in Pakistan before agreeing to strap on backpack bombs for a strike a few days before the eighth anniversary of the Sept. 11 terror attacks.
Admitted mastermind Najibullah Zazi and another man both pleaded guilty and testified against the 28-year-old Medunjanin.
Medunjanin's defense told jurors he only intended to fight with the Taliban, not become an al-Qaida operative.
