June 13, 2003 Mine Readiness Group 3 returned to Naval Station Ingleside, Texas, following a successful five-month Mediterranean deployment in support of Operation Iraqi Freedom. The readiness group includes Naval Reserve Force ship USS Sentry (MCM 3), as well as USS Devastator, USS Chief (MCM 14) and USS Scout (MCM 8) and their 332 personnel. Sentry, Devastator, Chief and Scout received short notice to deploy in December to support the Global War on Terrorism. After hurried preparations, the group departed Ingleside on Jan. 13. Their primary mission was to provide a mine warfare presence in the U.S. 6th Fleet area of operation, ensuring the uninterrupted flow of forces through the Suez Canal and to serve as a surge force if significant mining was encountered. Upon arrival in theater, the four ships joined USS Cleveland (LPD 7), which had embarked personnel from three Explosive Ordnance Disposal detachments, Mine Countermeasures Squadron 2 and Helicopter Mine Countermeasures Squadron 15. They then conducted several weeks of detailed Route Survey operations, surveillance and training in the vicinity of the Suez Canal, providing invaluable operational experience and continuing to define the future role of mine warfare forces. Sentry and Devastator arrived in the vicinity of the northern approach to the Suez Canal first and were in place when hostilities broke out in Iraq. Scout and Chief joined them shortly thereafter.

April 1, 2005 USS Devastator departed Naval Station Ingleside for a scheduled underway period to the Pacific Ocean.

May 6, The mine countermeasures ship is currently off the coast of Los Angeles participating in a maritime homeland security and defense exercise with the U.S. Coast Guard. The Exercise named Lead Shield III/Roguex V, will feature significant participation from the community and will include 19 USCG and Navy commands, six ships, seven aircraft and 24 interagency organizations totaling approximately 1200 personnal.

August 29, After traveling nearly 11,000 nautical miles, USS Devastator returned to Ingleside, Texas, from a five-month eastern Pacific and Southern Command deployment.

November 9, 2007 USS Devastator, commanded by Lt. Cmdr. Ken Reilley, completed Gulf of Mexico Exercise (GOMEX) 08-2 in the Corpus Christi operating area. This exercise marks the transition from a training group to fully capable and deployable assets in the MCM arsenal.

July 8, 2008 MCM 6 is currently conducting sea trials with advanced minesweeping gear off the coast of Texas. The new rigging will enable minesweepers to clear larger lanes in the ocean.

March 3, 2009 Capt. Robert S. Hospodar, Commander, Mine Countermeasures Squadron (COMCMRON) 2, relieved the CO Lt. Cmdr. Matthew Tucker for not "maintaining ship readiness standards." He was fired just over three weeks after the Devastator underwent a scheduled examination by the Board of Inspection and Survey (INSURV). The current XO Lt. Cmdr. Thomas Shear will took temporary command of the ship on Friday.

April 20, USS Devastator, USS Champion (MCM 4) and USS Pioneer (MCM 9) departed Naval Station Ingleside for their new homeport of San Diego in accordance with the Defense Base Relocation and Closure Commission.

May 22, The Devastator arrived at its new homeport of Naval Base San Diego.

June 19, Lt. Cmdr. Michael R. Murphy relieved Lt. Cmdr. John R. Callaway as commanding officer of the MCM 6.

June 29, 2010 USS Devastator, along with USS Pioneer, arrived in Joint Base Pearl Harbor-Hickam to participate in Exercise Rim of the Pacific (RIMPAC) 2010.

May 9, 2012 USS Devastator, commanded by Lt. Cmdr. Christopher J. Gilbertson, along with USS Sentry (MCM 3), USS Pioneer (MCM 9) and USS Warrior (MCM 10), departed port of Long Beach, Calif., to be forward-deployed to the 5th Fleet AoO. The four mine countermeasures ships were loaded aboard the contacted semi-submersible ship Tern for the transit to Manama, Bahrain.