USS Montpelier was the first submarine to launch Tomahawk cruise missiles in Operation Iraqi Freedom. She would go on to fire all 20 missiles earning her a "clean sweep" under the command of CDR William J. Frake.
On 27 May 2004 Montpelier went through an 18-month Depot Modernization Period (DMP) at Portsmouth Naval Shipyard in Kittery, Maine. The ship and crew completed this period three months ahead of schedule and, after successfully completing sea trials returned to their home port in Virginia.[1] The boat entered Norfolk Naval Shipyard on 5 February 2010 for modernization, maintenance, and upgrades, expected to cost around $35 million for 640,000-man hours, and included changing the submarine's buoyancy characteristics and upgrading its sonar capabilities. The work was completed and the sub returned to the fleet on 26 July 2010, eight days earlier than scheduled.[2]
On 13 October 2012, USS Montpelier collided with the cruiser off the east coast of the United States near Florida. Both ships were conducting a training exercise at the time of the incident. No one on board either ship was injured.[3] The sub's captain, Commander Thomas Winter, was relieved and the sub has since undergone $70 million in repairs.[4]
| Armed Forces Expeditionary Medals | 23–31 March 1997 | |
| 1 April – 24 June 1997 | ||
| Armed Forces Service Medals | 4–28 April 1995 | |
| 13 March – 3 June 1995 | ||
| NATO Medal | March – June 1995 | |
| Navy Unit Commendation | March – June 1995January–July 2003 | |
| Navy Expeditionary Medal | July – December 1998 | |
| Arctic Service Ribbon | July – December 1998 |