Joel Keelor successfully defended his Ph.D dissertation, "Advancements in Coupling Ambient Plasma Ionization and Drift Tube Ion Mobility Spectrometry with Mass Spectrometry." Joel was advised by Dr. Facundo Fernandez. After finishing up work at the CCE, Joel will begin his post-GT career in the Netherlands at the Maastricht Multimodal Molecular Imaging Institute (M4I) with Ron Heeren at Maastricht University.