| Unit Name: | 91st Security Forces Group |
| Dates: | Currently Active |
| Country: | United States |
| Branch: | United States Air Force |
| Type: | Air force infantry |
| Role: | Force Protection, Nuclear Security |
| Size: | 900+ |
| Command Structure: | 91st Missile Wing |
| Garrison: | Minot Air Force Base |
| Garrison Label: | Base |
| Commander1: | Colonel Anthony S. McCarty |
| Commander1 Label: | Group Commander |
| Commander2: | CMSgt Kenneth W. Broughman |
| Commander2 Label: | Group Chief Enlisted Manager |
The 91st Security Forces Group[1] falls under operational command of the 91st Missile Wing, and provides command and control for four squadrons—the 91st Missile Security Forces Squadron, 791st Missile Security Forces Squadron, 891st Missile Security Forces Squadron, and 91st Missile Security Operations Squadron – for the active defense of assets vital to national security. The 91st SFG ensures Security Forces are trained, organized and equipped to secure 150 Minuteman III missiles and Launch Facilities and 15 Missile Alert Facilities geographically separated throughout 8,500 square miles of the missile complex. All security support, including anti-terrorism, physical security measures and response forces for the 91st Missile Wing, are provided by the 91 SFG.
These units are the largest Security Forces contingent at Minot Air Force Base, being primarily responsible for maintaining the security of the Minuteman III missile silos in the surrounding area. When added together with the 5th Security Forces Squadron, Minot AFB has more Security Forces Airmen than any other installation in the Department of Defense.
November 2016 – Missile Security Operating Concept (MSOC) was implemented as a Beta test, the brainchild of Col. Jason Beers.[2]
November 2016 – 891st Missile Security Forces Squadron is created, but is considered a "shadow" unit during the Beta test of MSOC.
October 2017 – Missile Security Operating Concept is implemented across all three nuclear missile wings; Minot, Malmstrom and F.E. Warren[3]
On 4 May 2018, it was announced that an ammo container of 40mm grenades utilized for a MK-19, was lost in the missile field[4]
On 16 May 2018, the 91st SFG stated they were unable to account for an M-240 Machine Gun during a command wide inventory[5]
On 23 May, Col. Jason Beers, 91st Security Forces Group commander relieved of duty, due to a loss of trust and confidence[6] [7]
Activated 1 October 1973
Redesignated 91st Missile Security Group on 15 December 1992
Inactivated c.. 1 July 1994
Three squadrons composed of USAF Security Forces personnel are assigned. Their primary mission is to secure Protection Level 1[8] assets assigned to the 91st MW.
Initially conceived as part of the MSOC, the 891st was considered a shadow unit since November 2016, until it was officially created and command was assumed in November 2017. It is one of three operational Security Forces squadrons under the 91st SFG. It maintains a rotational posting of assigned Security Forces members within the missile field complex surrounding Minot Air Force Base.