Officials say they have thwarted a plan for a military-style assault at a school in Warren County.According to police, the attack was going to be carried out at Belvidere High School and the suspects had been doing surveillance work for possible escape routes. Police say 22-year-old James Shipps, of Belvidere, is charged with creating a false public alarm, making terroristic threats and hindering apprehension. He is being held on $50,000 bail and it is not known yet if he has retained a lawyer.Officials say an unidentified 17-year-old student at the school is also undergoing a psychological evaluation. According to officials, the teen was developing a hit list of students and teachers.