North Carolina ? A father, his two sons and four other North Carolina men are accused of military-style training at home and plotting “violent jihad” through a series of terror attacks abroad, federal authorities said Monday.

Officials said the group was led by Daniel Patrick Boyd, a married 39-year-old who lived in an unassuming lakeside home in a rural area south of Raleigh, where he and his family walked their dog and operated a drywall business. But two decades ago, Boyd, who is a U.S. citizen, trained in terrorist camps in Pakistan and Afghanistan and fought against the Soviets for three years before returning to the United States.

An indictment released Monday does not detail any specific terrorist plans or targets overseas, although it claims some of the defendants traveled to Israel in 2007 with the intent of waging “violent jihad” and returned home without success.