Senior Airman Travis Mollema, 28th Communications Squadron client system technician, replaces a faulty metal-oxide semi-conductor battery on a computer motherboard during maintenance at Ellsworth Air Force Base, S.D., Oct. 16, 2012. The CMOS battery is responsible for powering the computer’s memory and real time clock while computer systems are on or off. A faulty battery can lead to loss of time, date, and basic input and output system settings. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)