In October 1959, the Naval Security Group designated its first Special Assistant for Naval Security Group matters and assigned him additional duty as Officer in Charge, Naval Security Group Detachment, Commander Submarine Force, U.S. Atlantic Fleet.
One year later, the Chief of Naval Operations designated that position as Officer in Charge, Naval Detachment and Director of Intelligence Special Security Officer for Deputy Commander Submarine Force, U.S. Atlantic Fleet.
In October 1972, the Detachment was designated Naval Security Group Detachment Groton under the command of Commander, Naval Security Group Command. The Detachment was commissioned a Naval Security Group Activity on 1 May 1980.
In October of 2005, the Detachment was designated a Navy Information Operations Detachment under the command of Navy Information Operations Command, Georgia.
In October of 2008, the Detachment was realigned under the command of Navy Information Operations Command, Norfolk. This realignment consolidated all East Coast Fleet Electronic Support (FES) installations and maintenance under a single command.
Lieutenant Commander Bernard T. O’Neill is the Officer in Charge of this fine group of Sailors. Sailors that he describes as "the finest Sailors in the Fleet."