Change Log

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27 May 2026

Miscellaneous
- Home Page
  - Replaced main photo at top of page.
    (The awesome previous B&W photo from Mark Perry can be found here).
  - Updated link to SRMSC Redevelopment (2 new items 😀).
  - Added link to On your phone?.
- Introduction
  - Added civilian population centers link showing Safeguard areas of coverage.
- Introduction (Continued)
  - Replaced photo of LTG Mickelsen with one of better quality (top of page).
  - Added new introductory pages:
    - LTG Stanley Raymond Mickelsen
    - Safeguard History: Major Events
      - Event links to a detail page if there is a (more...) link.
    - Added a new introductory video:
      - ABM Complex in North Dakota | Mysteries of the Abandoned | Science Channel
    - Posts from Ronald Reagan Minuteman Missile State Historic Site
      via Facebook (4) :
- Media Coverage
  - Added 2 new items:
    - How this abandoned Cold War missile base became a crypto hub
    - North Dakota pyramid identified as worthy of National Historic Landmark consideration
- Minuteman
  - Added information on a proposed system to to prevent "fratricide" of Minuteman offensive missiles by Safeguard defensive missiles when both systems were actively carrying out their mission during a hostile ICBM attack.
- Miscellaneous: Redevelopment
  - Added 2 new items: 26 July 2025 and 28 March 2025 😀
- Miscellaneous: Safeguard Memorabilia Gallery 2
  - Added 12 new photos beginning with W072w.
- Nike Site SL-90 - Grafton (Pere Marquette State Park), IL | Gallery 1
  - Added photo N010.
- Personnel Roster
  - Updated Cecil Charles (First commander of the Concrete Missile Early Warning Station (former PAR))
    - Added links to photo and obituary (new window).
  - Updated Susan P Cheney (?)
    - Added link to photo and more information.
  - Updated Carol Goodman (Public Relations)
    - Added links to video interview (new window) and obituary (new window).
  - Updated Noel Laxdal (Computer Systems (Pan Am))
    - Added link to comments about shutting down the DPS for the last time.
  - Updated David McKinney Jr (Federal Electric Employee)
    - Added link to comments on the escape hatch ladder in the RLOB (Remote Launch Operations Building).
    - Added link to his blog entry describing time in the Panama Canal Zone and at Safeguard in North Dakota.
- References
  - Added 4 new entries:
- Safeguard Construction (continued)
  - Added links to 4 new "History" pages under "For more information:" at bottom of page.
- Safeguard Montana Complex (Malmstrom AFB)
  - Added an "Additional Perspective" at the bottom of the page.
    - A "Museum of Government Folly": The Safeguard Anti-Ballistic Missile System in North Central Montana, 1968-1977
- Safeguard Training Facility
  - Added a new link in "More information" at the bottom of the page.
    - Final Missile Maintenance Class Graduates
- Safeguard Training Facility | Photo Gallery A
  - Added photo D407.
- SRMSC Reunion - RSL Tour Guide
  - Added addresses (Google maps) for all RSL's except 3. Thanks Hugh Murphy.
- U.S. Army Depot, Safeguard
  - Added "Dissolution of the Safeguard Logistics Command and Depot" at the bottom of the page.
- Video: Safeguard After Shutdown
  - Added 1 new video: North Dakota's Biggest Junkyard
- Video: Safeguard In Operation
  - Added 5 new videos:
- High Resolution Photo Index
  - New page.
Missiles
- Missiles
  - Added additional information in the Spartan and Sprint descriptions.
  - Added 2 "More Information" links at bottom of the page.
    - Final Safeguard System Test Target Program (SSTTP) Flight
    - Operation Rocking Force: Missile Inactivation
- Spartan (Continued)
  - Added information on the W71 nuclear warhead.
  - Added 4 new links in the Additional Information section at bottom of the page.
    - astronautix.com: Spartan ABM (New window)
    - YouTube video (14:13): Spartan Warhead Test (New Window)
    - First SPARTAN Launch
    - Spartan Passes Its First Live Intercept Test: A Moment of Truth
- Spartan Gallery 1
  - Added or updated the following photos:
    - D418
    - A260
    - D412
    - D413
    - D415
- Sprint (Continued)
  - Added information on the W66 nuclear warhead.
  - Added 2 new links in the Additional Information section at bottom of the page.
    - If at first you don't succeed...
    - SPRINT Launch M2-42A: An opportunity to learn
- Sprint Gallery 1
  - Changed Sprint launch video 04204 to link to a YouTube video (new window) with additional scenes:
    - Missile on transporter.
    - Missile becomes incandescent.
- Sprint Gallery 2
  - Added three photos in the new Sprint Launch section.
- Sprint & Spartan Gallery 1
  - Added link to information on "Operation Green Mittens" to video 05014v.
MSR (Missile Site Radar)
- DPS Photo Gallery: MSDP (Missile Site Data Processor)
  - Added photo 7358e followed by V033.
- MSR Admin/Housing Areas Gallery B
  - Added photos V045-V048 showing interior views of the LASS (Limited Area Sentry Station).
- MSR / MSCB / MSPP More Info
  - Added links to 4 new pages.
    - MSR Clears Electromagnetic Compatibility (EMC) Radar Tests
    - Workin' 9 to 5
      - The Missile Site Radar - the place where the ABM battle would be directed - is put on a 40-hour-per-week basis.
    - MSR Deactivation
      - The end of Safeguard.
    - North Dakota pyramid worthy of National Historic Landmark consideration
- MSR / MSCB Photos: Exterior | Aerial
  - Added photos P300-P301.
- MSR / MSCB / MSPP Photos: Exterior | High Resolution Photos
  - New photo gallery.
- MSR / MSCB Photos: Exterior | Miscellaneous, Gallery 1
  - Added photo J003.
- MSR / MSCB Photos: Exterior | Miscellaneous, Gallery A
  - Added photos H050-H051.
- MSR / MSCB Photos: Exterior | Miscellaneous, Gallery E
  - Added photo H052.
- MSR / MSCB / MSPP Photos: Exterior | Night Photos
  - New photo gallery.
- MSR / MSCB Photos: Interior | Anechoic Chamber
  - Added video 05012V followed by photos A202_A206.
- MSR / MSCB Photos: Interior | Antenna Beam Steering
  - Added photo R053.
- MSR / MSCB Photos: Interior | BMDOC (Ballistic Missile Defense Operations Center)
  - BMDOC photos from various other pages were added to make this the "Main Page" for the BMDOC. Due to the large number of updates, they are not listed individually.
  - Changes or additions can be located by doing a "Find" ( CTRL + f ) for <$ .
- MSR / MSCB Photos: Interior | ERC (Equipment Readiness Center)
  - New page.
- MSR / MSCB Photos: Interior | Levels 3 & 4
  - Added photos
- MSR / MSCB Photos: Interior | Receiver
  - Added photo 7358e followed by photo 1116e.
- MSR / MSCB / MSPP Photos: Interior | SRV (System Readiness Verification)
  - New page.
- MSR / MSCB Photos: Interior | Transmitter
  - Due to the large number of updates, they are not listed individually.
  - Changes or additions can be located by doing a "Find" ( CTRL + f ) for <$ .
- MSR / MSCB / MSPP Photos: Other | Power Plant / Security Operations, Gallery 1
  - Related photos from various other pages were added to make this the "Main Page" for the Power Plant and Security Operations. Due to the large number of updates, they are not listed individually.
  - Changes or additions can be located by doing a "Find" ( CTRL + f ) for <$ .
PAR (Perimeter Acquisition Radar)
- CAFS 25th Anniversary Photo Gallery - Section D
  - Add information on LTC Cecil Charles to photo 03335.
- PAR Complex Aerial Photos
  - Added photo D410.
- PAR Data Processing System (DPS)
  - Added information on 2 "Major Upgrades to the PAR DPS" at top of page.
- PAR Operations Center (PAROC)
  - Added video 04205.
- PAR Radar Components
  - Added link to TWT upgrade info in description for photo 7431.
- Perimeter Acquisition Radar (Safeguard PAR)
  - Added 3 new links in the new "Additional Information" section at bottom of the page.
    - PAR Conducts Initial Satellite Test (20 Jul 1973)
    - Major upgrades to PAR software (1976-1977)
    - PAR Transferred from U.S. Army to U.S. Air Force (1 Oct 1977)
- USAF PARCS
  - Changed the photo at top of page.
  - Made 2 minor changes to the description text.
  - Added 5 new links in the new "Additional Information" section at bottom of the page.
    - ABM R & D at Bell Laboratories: Project History, Part II, Chapter 8 (PDF)
    - Major upgrades to PAR software
    - Major upgrades to PARCS hardware
    - Cavalier Air Force Station renamed Cavalier Space Force Station
    - PARCS radar ... to receive major upgrade
- USAF PARCS Photo Gallery
  - Added photo U100.
RSL's (Remote Sprint Launch sites)
- RSL More Information
  - Added 2 entries in the new "Miscellaneous" section at top of the page:
    - Final Safeguard construction contract awarded for RSL's 1 and 4
    - Detailed Location Maps
- RSL 2 For Sale (November 2025)
  - New page.
- RSL 2 Gallery A
  - Added 5 photos:
    - K040
    - C090
    - K042
    - K041
    - K043 (below 04633)
- RSL 2 Gallery B
  - Added photo G201

25 July 2022

Home Page
- Added message about Bitzero buying the MSR for a data center
SRMSC Redevelopment
- Added AP article "Bitzero to buy old North Dakota missile site for data center"

Earlier updates:

See Change Log Archive