Knox County Sheriff's Office Chief Deputy Timothy Carroll graduated Friday, Dec. 15, from the FBI National Academy in Quantico, Va.

The chief deputy graduated following 11 weeks of intensive training.

"It was an unbelievable experience," Carroll said Dec. 19, after returning to duty at the Sheriff's Office.

The goal of the academy is to support, promote and enhance an officer's personal and professional development.

"Graduates are better prepared to face complex, dynamic and contemporary challenges by calling upon innovative techniques and colleagues from their international professional network," Sheriff Donna Dennison said in a news release Dec. 19.

Carroll applied to the academy in 2013 and was the sole Maine officer selected to attend this 11-week session. There are four sessions a year.

He received 17 college credits from the University of Virginia for completing the session.

President Donald Trump spoke at the Dec. 15 graduation ceremony.

The training includes instruction in law, behavioral sciences, forensic science, leadership, communication, fitness, and understanding terrorism.

Carroll said he met law enforcement officials not only from across the United States, but also from countries around the world, including Saudi Arabia, United Arab Emirates and Argentina.

Carroll was appointed chief deputy for Knox County in August 2010. He previously had worked as business manager at Fuller Automall, and before that he was a Marine Patrol officer for 10 years. His father and uncle are retired Marine Patrol officers and a cousin remains with the agency.

A Bar Harbor native, Carroll began his law enforcement career as a patrol officer for the Rockland Police Department in February 1991. He worked for Rockland for two years before taking a job with the Bar Harbor Police Department.

He is married and the couple have two children.