CPT Zehnpfennig is an Engineer and Functional Area 24 (Telecommunications Systems Engineer) officer who serves as an Instructor in the Electrical Engineering and Information Technology programs. He is also a Lead Researcher in the USMA/Army Photonics Research Center where he researches optical whispering gallery micro-resonators, particularly opto-mechanical interaction. His previous military assignments include enlisted Military Policeman, Executive Officer of an Army basic training company, Platoon Leader within one of the Army's three multi-role bridge building companies, and Commander of a Combat Engineer and Bridge Crewmember One Station Unit Training (OSUT) company. He is a 2000 Graduate of USMA Prep School, a 2004 Graduate (B.S., Electrical Engineering)of USMA, and a 2011 Graduate (M.S.E., Electrical Engineering, Optics and Photonics) of the University of Michigan, Ann Arbor. He is also a graduate of Military Police OSUT, Engineer Officer Basic Course, Signal Captains Career Course, and Telecommunication Systems Engineer Course. He has been deployed to Germany (1996-1999) and Iraq (O.I.F. 05-07, 2005-2006). He holds certification as an Intern Engineer (FEE/EIT) in the State of New York, (ISC)2 Certified Information Systems Security Professional (CISSP), CompTIA Security+ Professional, and Cisco Certified Network Associate. His academic interests include optical micro- and nanoresonators, sensors, local oscillators, IT security, elliptic curve cryptography, and routing algorithms. He is a member of the IEEE and the Eta Kappa Nu Electrical Engineer and Computer Scientist Honor Society.