John Hannegan John Hannegan, a graduate student and research scientist at the University of Maryland, adjusts photon collection optics in preparation for linking the trapped ion lab with another quantum lab. He is working with Army research at the Army Research Laboratory in Adelphi, Md. SHARE: Download: Full Size (0.44 MB) Credit: Army VIRIN: 210202-O-ZZ999-001M.JPG Photo Gallery