The Naval Submarine Base New London (SUBASE) and its Navy Security Force are holding security drills in Groton that will include gunfire starting on Tuesday.
The SUBASE is participating in exercises called the "Citadel Project" and will conduct various trainings and drills along the base's waterfront, according to the Naval Base.
Drills will involve SUBASE security boats, simulated aggressor boats, submarines and waterfront facilities.
Some trainings will also include live automatic weapons firing with blanks, officials added. The live-fire training and drills with blanks are scheduled between the hours of 8:15 a.m. through 3:30 p.m.
The trainings begin on Tuesday and go through Friday. They are expected to continue next Monday through next Thursday.
The regularly-scheduled Navy-wide exercise helps SUBASE continue to enhance the readiness of base Naval Security Forces to respond to threats to the base and its homeported submarines, officials said.
If neighbors or base personnel hear gunfire or anything of concern at any other time, they are urged to report it immediately so authorities can investigate it.