Krishnakumar Nangeelil and Zaijing Sun (both Health Physics and Diagnostic Sciences) recently gave oral presentations at the 68th Annual Meeting of the Health Physics Society(HPS AM 2023) in National Harbor, Maryland. Nangeelil's talk is titled, “Comparison of GEANT 4 Simulation and Experimental Measurements of CosmicGuard Background Reduction System,” and Sun’s talk is titled, “Developing a Remote Gamma Spectra Collection System for Nuclear Sciences.” Sun also served as the session chair in the instrument session of the conference.