MEG Lab Navy Cmdr. (Dr.) John Hughes, director of the magnetoencephalography lab at the National Intrepid Center of Excellence in Bethesda, Md., discusses the technology he uses to help service members and veterans with traumatic brain injuries. DoD photo by Navy Petty Officer 2nd Class Darien Kenney SHARE: Download: Full Size (0.37 MB) Credit: MC2 Darien Kenney VIRIN: 160318-D-NU634-002.JPG Photo Gallery