Chrys Wesdemiotis: Our Adviser, Mentor, and Friend.

I recall the day when Laurence Charles and Richard Cole approached me to be a guest editor for a special issue honoring the life work of my former PhD adviser and friend, Distinguished Professor Chrys Wesdemiotis, at The University of Akron. It took me less than one second to say I would be honored to participate because of how Chrys made an impact, not just on my life, but for the countless others who have worked with him over the years. Many of us know Chrys for his vast scientific achievements, crossing multi-disciplinary fields of research. However, only a select group of his former students and postdocs can truly appreciate Chrys and his impact on our lives throughout the years. Chrys has been an integral part of celebrating our successes in the lab, mentoring us through challenging times, and being part of our lives even well beyond our studies and research on campus. In this reminiscence article, a group of former and current students will comment on how Chrys is special to us, and we genuinely appreciate him being our adviser, mentor, and friend. We are thrilled to see Chrys being honored with this special issue of Mass Spectrometry Reviews! Bryan Katzenmeyer, PhD Director, Mass Spectrometry Business at JEOL.