A former Warren County Airport manager has been indicted by the grand jury after a TBI investigation revealed thousands of dollars missing from airport funds.John Patterson, 42, of Clarksville was booked into Warren County Jail on Monday and released on $20,000 bond. He currently serves as director of Clarksville Regional Airport, a job he left Warren County to take.According to the TBI investigation, Patterson took approximately $17,500 from Warren County Airport between 2007 and 2011 while working here as airport manager.“I turned myself in, have been booked and I look forward to my day in court,” said Patterson when reached by phone yesterday.Patterson forged daily logs which kept a running total of cash and credits coming into the airport, the investigation showed. On several occasions, Patterson would white-out in the log the amount of cash taken in, change the amount on the log and pocket the cash for himself.