LAWRENCEVILLE, Ga. -- Gwinnett County police are investigating a stolen charter jet that was located Monday afternoon at Briscoe Airfield in suburban Atlanta. Police say the 1995 twin-engine Cessna Citation 7 -- valued at $7 million -- was in St. Augustine, Fla., awaiting its next next charter. The pilot reported the plane missing to the St. Johns County Sheriff's Office at 11:30 a.m. Monday. The 10-passenger executive jet showed up at Briscoe Airfield between 9:30 p.m. Saturday and 6:30 a.m. Sunday. Airport authorities reported it was there after getting getting the bulletin about the missing plane. Whoever stole the jet...