AF Form 3951: ICBM Hardened Cable Landowner Questionnaire – AF Form 3951: Intercontinental Ballistic Missile Hardened Intersite Cable Right-of-Way Landowner/Tenant Questionnaire is an official U.S. Air Force form used to collect updated information from private landowners and tenants whose property intersects with or lies near the Hardened Intersite Cable System (HICS) right-of-way (ROW).
This two-page questionnaire helps the Air Force maintain the critical communications infrastructure supporting the Minuteman III Intercontinental Ballistic Missile (ICBM) system, one of the pillars of U.S. nuclear deterrence. The form is prescribed by AFMAN 21-202 and carries OMB Control Number 0701-0141.
What Is the Hardened Intersite Cable System (HICS)?
The HICS consists of buried, blast-hardened communications cables that connect ICBM launch facilities (silos) to launch control centers across the missile fields in the northern United States (primarily near bases such as Malmstrom AFB in Montana, Minot AFB in North Dakota, and Ellsworth AFB in South Dakota).
These cables, often buried about eight feet underground and running for thousands of miles, allow secure command and control communications between missile crews and the weapons they oversee. The system was engineered during the Cold War to survive nuclear attack and remains a vital part of today’s strategic deterrent.
The Air Force maintains rights-of-way along these cable routes. Activities like construction, excavation, utility work, road building, or even natural erosion can potentially damage the cables or compromise their protective “hardness.” AF Form 3951 serves as a key tool for proactive coordination with property owners to prevent such issues.
Purpose of AF Form 3951
According to the form’s Privacy Act Statement and supporting documentation:
- It collects updated landowner/tenant contact information.
- It identifies property conditions that could affect the cable route (erosion/exposure, damaged fences or gates, downed or leaning marker posts).
- It gathers details about planned projects or actions (construction, excavation, utility crossings, highway work, etc.) near the cable route.
This information allows the Air Force to schedule maintenance, coordinate work to avoid damage, and preserve the integrity of the HICS. Failure to provide the information is voluntary but “would greatly impair the ability of the U.S. Air Force to schedule and coordinate missile cable maintenance efforts with affected landowners/tenants.”
The form is typically mailed to landowners with a pre-addressed, postage-paid return envelope. Completed forms should be returned to the local missile complex maintenance unit’s office (often the Cable Affairs or Facilities Maintenance section).
What Information Does the Form Request?
The questionnaire is straightforward and includes these main sections:
- Landowner Information — Name, phone numbers (home/cell), mailing address.
- Tenant Information (if different) — Name and physical address.
- Conditions Concerning the Missile Cable Route (Yes/No with location details if applicable):
- Developing erosion along the cable route and/or exposure of the cable.
- Missile cable fence/access gates damaged or needing repair.
- Missile cable route marker posts damaged, leaning, or down.
- Planned Projects or Actions — Any construction, excavation, or other work planned on or near the cable route, with general information and location.
The form thanks respondents for their time and emphasizes the importance of the information for national security-related maintenance.
Who Receives AF Form 3951?
Property owners and tenants in or near the ICBM missile fields (Montana, North Dakota, South Dakota, Wyoming, Colorado, Nebraska, and parts of other states) may periodically receive this form. The Air Force tracks thousands of landowners and tenants along more than 1,700–5,000 miles of HICS routes, depending on the specific squadron or wing.
Cable Affairs sections within missile maintenance units manage these records, monitor rights-of-way for encroachment or erosion, and coordinate with public utilities and “811” One Call locate services.
Why Is This Important for Landowners?
- Protect your property and operations: Early coordination helps avoid unexpected disruptions during Air Force maintenance or repairs.
- Prevent accidental damage: Excavation or heavy equipment near the buried cables can cause costly repairs and potential security concerns. The Air Force works with owners to locate cables safely (often using markers).
- Support national security: Accurate information ensures the reliable operation of America’s land-based nuclear deterrent.
- Voluntary but valuable: Providing current contact and project details allows better planning and minimizes impact on farming, ranching, or development activities common in these rural areas.
If you receive the form, completing and returning it promptly helps maintain good relations with the local Air Force units responsible for the missile field.
How to Download AF Form 3951?
You can download the current version of the form directly from the official Air Force e-Publishing site:
→ Download AF Form 3951 PDF here: https://static.e-publishing.af.mil/production/1/af_a4/form/af3951/af3951.pdf
The form revision is dated 20210617 (June 17, 2021), and previous editions are obsolete. Always use the latest version from the official .mil source.
Related Context: Transition to Sentinel ICBM
The Air Force is modernizing the ICBM force with the Sentinel (Ground Based Strategic Deterrent) system, which will eventually replace Minuteman III. This includes upgrades to communications infrastructure (potentially shifting some copper HICS to fiber optic lines). Landowners in missile field areas may see additional coordination or easement discussions in coming years as the transition progresses.
For questions about a specific form you received, contact the local missile wing’s maintenance or Cable Affairs office (details are usually provided with the mailed form). General inquiries about ICBM operations should go through official Air Force Global Strike Command channels.
Note: This article is for informational purposes only and is based on publicly available U.S. Air Force documents and Federal Register notices. It does not constitute official guidance. Always refer to the form instructions and your local Air Force point of contact for specific situations.
Keywords: AF Form 3951, ICBM hardened intersite cable, HICS right-of-way, Minuteman III cable questionnaire, Air Force landowner form, missile field easement
Landowners and tenants in ICBM missile complex areas play an important role in helping maintain one of the nation’s most critical defense systems. Completing AF Form 3951 when requested supports safe, effective coordination while respecting private property rights.