Sheriff Scott Maples Jr is deeply proud to announce that Assistant Chief Mark Grube has graduated as a member of the 296th session of the FBI National Academy.
The graduation took place at the National Academy in Quantico, Virginia, on December 11th, 2025.
Assistant Chief Grube is the 2nd officer in the Sheriff’s Office’s history to complete this prestigious program. Nationally, fewer than 1 percent of law enforcement officers are nominated and selected to attend the program. His journey began over five years ago and included rigorous background checks, academic requirements, and a lengthy selection process.
Assistant Chief Grube is proud to be one of two hundred and fifty-four law enforcement officers who graduated as part of the 296th session of the academy, which consisted of men and women from 47 states and the District of Columbia.
The class also included representatives from law enforcement agencies from 24 countries, members of four military organizations, and two representatives from federal civilian organizations. Assistant Chief Grube’s academic achievements were also complemented by 11 weeks of intense physical training, which culminated in the completion of the
grueling “Yellow Brick Road” 6.1-mile run and obstacle course, earning the Assistant Chief the prestigious Yellow Brick and a graduate certificate from the University of Virginia, which accredits all National Academy courses offered.
“It was an absolute honor to be part of FBI National Academy Session 296,” said Grube. “I trained, learned, and formed lifelong partnerships with the most incredible law enforcement executives in the world.”
Internationally known for its academic excellence, the National Academy offers 11 weeks of advanced communication, leadership, and fitness training. FBI Academy instructors, special agents, and other staff with advanced degrees provide the training; many instructors are recognized internationally in their fields. In the final challenge, Assistant Chief Grube earned his prestigious yellow brick by completing the 6.2-mile yellow brick road run and obstacle course.
A total of 56,688 graduates have completed the FBI National Academy since it began in 1935. The National Academy is held at the FBI Training Academy in Quantico, the same facility where the FBI trains its new special agents and intelligence analysts.
“Assistant Chief Grube’s graduation from the FBI National Academy is not just a personal
achievement but a milestone for our agency,” said Sheriff Maples. “His dedication, leadership, and commitment to excellence reflect the very best of the Clark County Sheriff’s Office, and his success strengthens our entire community.”
Assistant Chief Mark Grube is a graduate of Jeffersonville High School and attended Oakland City University, where he received his bachelor’s degree in criminal justice. Additionally, he earned his master’s degree in criminal justice from the University of Louisville, achieving a stellar 3.96 GPA.
Assistant Chief Grube is also a graduate of the 151st session of the University of Louisville’s Prestigious Southern Police Institute Administrative Officers Course.
Grube began his career with the Sheriff’s Office in 2006 as a corrections officer. He is currently assigned as Assistant Chief and oversees the Sheriff’s Office Patrol, Corrections, and Criminal Investigations Divisions. His previous assignments include patrol, detective, corporal, captain, major, K-9 Officer, field training officer, river patrol, aviation unit, corrections supervisor, corrections detective, jail commander, patrol supervisor, and commander of the operations division.
