MAHONING, PA -- A 41-year-old police chief in central Pennsylvania has been charged with "huffing" a can of compressed air while on duty.Mahoning Township Chief Chad Thomas is facing two misdemeanor counts for allegedly breathing in a product used to clean keyboards and computer equipment.The state Attorney General's Office is pursuing the charges. The office says that other officers saw him inhale the product in May and watched as his eyes fluttered and he became unresponsive.Thomas has been released after a brief court appearance Wednesday in Danville. He returns to court for a preliminary hearing on Dec. 16.Thomas did not immediately return a message left at the police station. A home listing could not be found, and it was not immediately clear if he has a lawyer.