Sgt. Casey McCarthy, a data network specialist with

Sgt. Casey McCarthy, a data network specialist with the 24th Marine Expeditionary Unit's communications section, works to troubleshoot a computer issue, Jan. 16, 2012. The Montgomery, Ala., native's job in the Marine Corps centers on a gambit of computer-centric tasks such as: assembling servers, establishing and troubleshooting a tactical data network, uploading software and more. McCarthy works to keep the 24th MEU's data network system up and running during the unit's Realistic Urban Training exercise, scheduled Jan. 5-20. The exercise serves to prepare and certify the Marines and sailors of the 24th MEU for the various operations they may conduct during their upcoming deployment.