Charles Shannon Keen, 46, of Summerville, was arrested last week on charges of DUI after failing field sobriety tests at a license and safety checkpoint.  Chattooga County Deputies and Trion Police were conducting a safety checkpoint at the intersection of Ridgeway Drive and Tatum Road last Saturday. According to the incident report filed by the Chattooga County Sheriff’s Office,  Keen’s vehicle, a white Land Rover Discovery Sport, entered the checkpoint. A deputy noticing the odor of alcohol, directed Keen to pull aside. The deputy also detected the odor of alcohol and initiated a conversation with Keen, who initially denied consuming alcohol before admitting to having “three or four” drinks.  A portable breath test registered a 0.094 blood alcohol content. Keen subsequently refused a blood test after being read implied consent. Keen then asked if he could tell his wife to call a ride because she was also intoxicated, the report stated. After being read his Miranda rights, Keen admitted to having “3 or 4 beers” approximately 30 minutes prior to driving. While being transported to the Chattooga County Jail, Keen told deputies, “I’m sorry for driving I knew I shouldn’t have been.” Keen was booked into the Chattooga County Jail without incident.