JOINT BASE ELMENDORF-RICHARDSON, Alaska - Air Force Staff Sgt. Stanley Manning, 673d Medical Group Sleep Lab technician, marks spots on Jason Manzel, 725th Brigade Support Battalion, 4th Brigade Combat Team (Airborne), 25th Infantry Division, with a grease marker March 31. The markings allow for Manning to know where he will apply electrodes, which will be used to read Manzels brain waves while he sleeps. (U.S. Air Force photo/ Airman 1st Class Jack Sanders)