On November 3, 2023, the Georgian Health Physics Association welcomed Darrell Fisher, a seasoned nuclear medicine physicist representing Versant Medical Physics & Radiation Safety, to share his groundbreaking work in precision radionuclide therapy. Fisher received his Ph.D. in nuclear engineering sciences from the University of Florida and carried a rich legacy of a 35-year tenure as a senior scientist and the lead of the Isotope Sciences Program at Pacific Northwest National Laboratory. His career also showcases his role as a science advisor to the U.S. Customs and Border Protection Commissioner between 2003 and 2005. Notably, Dr. Fisher has been a pivotal figure in leadership of the Health Physics Society, serving on its board of directors, as treasurer, and later as president of the society.