Hardin County officials are warning residents of the potential for increased noise while Fort Knox conducts military training exercises.In a post on Facebook, the Hardin County Sheriff's Office said that training will be conducted on April 26 and 27.This training will involve aircraft, maneuvers, and weapons firing at both day and night.Officials said these training are important because they help maintain "critical capabilities and readiness of all units."They added that increased noise and vibrations may be experienced during this period of time.