LANGLEY AIR FORCE BASE, Va. -- James City County Master Police Officer Marc Marchand (in black) advises Senior Airman Brandon Kohler, 633d Security Forces Squadron patrolman, how to properly administer a field sobriety test to Staff Sgt. Chris Cobbs, 633 SFS desk sergeant, during a training exercise at Langley Air Force Base, Va., Jan. 20. The JCC Police Department provided expert officers to train security forces personnel how to perform the test and apprehend impaired drivers, which are requirements for all law enforcement officers operating in Virginia. (U.S. Air Force photo/Airman 1st Class Jason J. Brown)