A Massachusetts physics graduate has been sentenced to 17 years in prison for planning to build explosives-laden drones to attack the Pentagon and the U.S. Capitol. The FBI says Rezwan Ferdaus conducted detailed surveillance to map out the attack and acquired a small aircraft as part of his plan to carry it out. The plot would have marked the first time that militants deployed the drone technology used by the United States to strike targets in foreign countries for an attack inside the United States. Ferdaus was caught with the help of undercover agents posing as al-Qaeda operatives who gave him the money to buy the drones, a tactic that has led to allegations of entrapment.