WASHINGTON, DCThe Pentagon announced Monday that 80 percent of Osama bin Laden's seconds-in-command have been eliminated. 'Nearly 1,600 al-Qaeda leaders ranked number two have been wiped out,' Lt. Col. Mark Allison said. 'That leaves only 400 of Osama bin Laden's right-hand men in the organization.' Following the apparent failure to kill bin Laden's No. 2 man Ayman al-Zawahri in a missile strike on a Pakistani border town on Jan. 13, American forces intensified the search for al-Qaeda second-in-command Ahmed Al-Zahnami, or, failing that, No. 2 man Amman al-Zaharani, or No. 2 man Ahmed al-Zafarani. 