More than 500 members from the 131st Fighter Wing and the tenant units located at Lambert International Airport were called into service to battle the Great Flood of 1993.
 In the post-Cold War era, the unit deployed to Incirlik AB, Turkey in support of Operation Northern Watch in 1996, 1997 and 1998.

Members of the 131st returned in October 2000 from duty rotations in Southwest Asia and Europe, while other unit members were still stationed overseas.
Eventually, a total of about 430 wing members were scheduled to deploy, with the majority leaving in October 2000 for Prince Sultan AB, Saudi Arabia, in support of Operation Southern Watch.
 A little more than half of the deployed 131st Fighter Wing members and 12 F-15s made up the AEF-9's 110th Expeditionary Fighter Squadron (EFS).
 The 110th EFS primarily provides air superiority for Operation Southern Watch.
 AEF-9 was deployed from September through November 2000.
 In 2004, the improved F-15C Eagle arrived, replacing the older aircraft.

On 16 March 2006, the Air Force announced that elements of the 131st Fighter Wing would become an associate unit assigned to the active duty 509th Bomb Wing.
 Consequently, the 131st Fighter Wing transitioned from flying and maintaining the F-15C Eagle fighter to the B-2 Spirit bomber.
 The final flight of the F-15C Eagle by the 131st occurred in June 2009 from Lambert International Airport in St. Louis.
 The unit was redesignated as the 131st Bomb Wing on 1 October 2008.
 The 509th and the 131st joined forces according to what is known as a "classic associate wing" structure.
 In a classic association, the active duty 509th retains ownership of the operational assets, including aircraft, maintenance facilities, and so on.
 However, each wing maintains its own chain-of-command and organizational structure, while the members of each unit perform their duties in a fully integrated manner.
 As a result, active duty and Air National Guard pilots and maintainers fly B-2 missions and sustain the aircraft as though they were one unit.

On the morning of Wednesday, 30 May 2007, a Missouri Air National Guard F-15 pilot ejected safely from his aircraft just before it crashed during a training mission in rural Knox county, Indiana.
 The plane went down just before 11 am EDT south of Vincennes, near the Illinois border, as it conducted standard training maneuvers, according to a release from the National Guard.
 Investigators said the plane was flying at about 20,000 feet prior to the crash.
 The pilot had been with the 131st Fighter Wing for 12 years and was highly experienced, officials said.
 The unit had most recently enforced no-fly zones in Iraq.
 This crash decreased the 131st's aircraft strength from 20 to 19.

On 2 November 2007, another F-15C from the 131st crashed in Mark Twain National Forest near Boss, Missouri.
No property was damaged and no people on the ground were hurt, however the pilot broke an arm and a shoulder, despite ejecting from the plane.
 The pilot also was said to be in "shock" by the landowners who found him.
 After investigation, the crash was attributed to a flaw in a part of the plane's fuselage; this led to all F-15 aircraft being grounded between November and January 2008.
 After the accidents, the 131st's flights were reduced, which was also due to the wing's transition to flying B-2s.

In its 2005 BRAC recommendations, the Department of Defense recommended realignment of the 131st Fighter Wing.
 The 110th's F-15s (15 aircraft) were distributed to the 57th Fighter Wing, Nellis Air Force Base, Nevada (nine aircraft), and 177th Fighter Wing, Atlantic City International Airport AGS, NJ (six aircraft).
 After which, the unit moved to Whiteman Air Force Base, Missouri and became the first Air National Guard B-2 Spirit Stealth Bomber unit.

The F-15s began to leave Lambert on 15 August 2008, and by January 2009 most of the 13 remaining aircraft were in the main hangar being stripped of markings.
 The final two F-15Cs departed on 13 June 2009 after a closing ceremony titled "The End of an Era," which was attended by over 2,00
More than 500 members from the 131st Fighter Wing and the tenant units located at Lambert International Airport were called into service to battle the Great Flood of 1993.  In the post-Cold War era, the unit deployed to Incirlik AB, Turkey in support of Operation Northern Watch in 1996, 1997 and 1998.
Members of the 131st returned in October 2000 from duty rotations in Southwest Asia and Europe, while other unit members were still stationed overseas. Eventually, a total of about 430 wing members were scheduled to deploy, with the majority leaving in October 2000 for Prince Sultan AB, Saudi Arabia, in support of Operation Southern Watch.  A little more than half of the deployed 131st Fighter Wing members and 12 F-15s made up the AEF-9's 110th Expeditionary Fighter Squadron (EFS).  The 110th EFS primarily provides air superiority for Operation Southern Watch.  AEF-9 was deployed from September through November 2000.  In 2004, the improved F-15C Eagle arrived, replacing the older aircraft.
On 16 March 2006, the Air Force announced that elements of the 131st Fighter Wing would become an associate unit assigned to the active duty 509th Bomb Wing.  Consequently, the 131st Fighter Wing transitioned from flying and maintaining the F-15C Eagle fighter to the B-2 Spirit bomber.  The final flight of the F-15C Eagle by the 131st occurred in June 2009 from Lambert International Airport in St. Louis.  The unit was redesignated as the 131st Bomb Wing on 1 October 2008.  The 509th and the 131st joined forces according to what is known as a "classic associate wing" structure.  In a classic association, the active duty 509th retains ownership of the operational assets, including aircraft, maintenance facilities, and so on.  However, each wing maintains its own chain-of-command and organizational structure, while the members of each unit perform their duties in a fully integrated manner.  As a result, active duty and Air National Guard pilots and maintainers fly B-2 missions and sustain the aircraft as though they were one unit.
On the morning of Wednesday, 30 May 2007, a Missouri Air National Guard F-15 pilot ejected safely from his aircraft just before it crashed during a training mission in rural Knox county, Indiana.  The plane went down just before 11 am EDT south of Vincennes, near the Illinois border, as it conducted standard training maneuvers, according to a release from the National Guard.  Investigators said the plane was flying at about 20,000 feet prior to the crash.  The pilot had been with the 131st Fighter Wing for 12 years and was highly experienced, officials said.  The unit had most recently enforced no-fly zones in Iraq.  This crash decreased the 131st's aircraft strength from 20 to 19.
On 2 November 2007, another F-15C from the 131st crashed in Mark Twain National Forest near Boss, Missouri. No property was damaged and no people on the ground were hurt, however the pilot broke an arm and a shoulder, despite ejecting from the plane.  The pilot also was said to be in "shock" by the landowners who found him.  After investigation, the crash was attributed to a flaw in a part of the plane's fuselage; this led to all F-15 aircraft being grounded between November and January 2008.  After the accidents, the 131st's flights were reduced, which was also due to the wing's transition to flying B-2s.
In its 2005 BRAC recommendations, the Department of Defense recommended realignment of the 131st Fighter Wing.  The 110th's F-15s (15 aircraft) were distributed to the 57th Fighter Wing, Nellis Air Force Base, Nevada (nine aircraft), and 177th Fighter Wing, Atlantic City International Airport AGS, NJ (six aircraft).  After which, the unit moved to Whiteman Air Force Base, Missouri and became the first Air National Guard B-2 Spirit Stealth Bomber unit.
The F-15s began to leave Lambert on 15 August 2008, and by January 2009 most of the 13 remaining aircraft were in the main hangar being stripped of markings.  The final two F-15Cs departed on 13 June 2009 after a closing ceremony titled "The End of an Era," which was attended by over 2,00
131st Bomb Wing