July 19, 2005 USS Ardent is currenty conducting Surface Action Group operations during Exercise Nautical Union in the Persian Gulf. Nautical Union is a joint exercise directed through Comander Destroyer Squadron Five Zero (COMDESRON 50) between the U.S. and coalition forces.

March 10, 2006 While conducting maritime security operations (MSO) in the Persian Gulf March 6, USS Ardent, commanded by Lt. Cmdr. Philip Sobec, responded to a distress call by an Iraqi-owned commercial vessel "Gulf Queen". The mine countermeasures ship remained on station for three days, providing support until the owner of the vessel could arrange for a tug boat to arrive to tow the damaged vessel to Iraq. The Ardent Sailors also supplied them with food and fresh water.

September 19, MCM 12 is currently conducting mine sweeping operations, in the Persian Gulf, with the USS Saipan (LHA 2).

December 2, USS Ardent, commanded by Lt. Cmdr. Angel Cruz, is currently in the Persian Gulf conducting routine exercices.

June 2, 2007 USS Ardent concluded the eight-day exercise Nautical Union 2007, with Saudi Arabian forces, in the Persian Gulf.

September 4, 2009 The Ardent is currently participating in mine countermeasure exercises, along with with USS Bataan (LHD 5), USS Gladiator (MCM 11), USS Dextrous (MCM 13), HMS Grimsby (M108) and RFA Lyme Bay (L 3007), in the Persian Gulf.

May 23, 2010 USS Ardent, commanded by Lt. Cmdr. Joze Roman, departed floating dry-dock after a three-month restricted availability period at the Mina Salman Pier. The ship underwent interior and exterior painting, preservation, renovations and repairs.

September 1, USS Ardent, USS Scout, USS Gladiator and USS Dextrous, participated in a training evolution Aug. 15-25, in the Arabian Gulf, along with four British mine countermeasures (MCM) ships.