A Northern Virginia man admitted Friday in federal court that he spent months plotting to travel to Syria so he could become a fighter with the Islamic State. Joseph Hassan Farrokh, 28, of Woodbridge, unknowingly discussed his plans with FBI informants all along, prosecutors said. He was arrested in January at Richmond International Airport as he was about to board a flight for the first leg of his trip. During a hearing in federal court in Alexandria, Farrokh pleaded guilty to conspiracy to provide material support to the terrorist organization.