Exploring the secrets of a secluded US military facility in the mountains

Fluctus
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Oct 30, 2026
Hello everyone and welcome back to the Fluctus channel.
This is the Cheyenne Mountain Complex,
located beneath 2,000 feet
of solid rock inside Cheyenne Mountain in the southwest
corner of Colorado Springs.
Cheyenne Mountain was excavated by the Army Corps of Engineers
to build the NORAD Combat Operations Center
and became fully operational on April 20, 1966.
Over time, the Cheyenne Mountain Complex accommodated elements
of the U.S. Strategic Command, U.S.
Air Force Space Command,
and U.S. Northern Command, U.S. NORTHCOM.
In October 1962,
a major standoff known as the Cuban Missile Crisis brought the United
States and the Soviet Union dangerously close
to war over the deployment of Soviet nuclear-armed
missiles in Cuba.
After pledging in May 1, 1960 to defend Cuba with Soviet weaponry,
the Soviet Union installed
medium and intermediate range ballistic missiles in Cuba,
assuming the United States would not
intervene. However, these missiles,
if launched from Cuba, could strike much of the eastern
United States within minutes, making the situation unacceptable.
On October 14, 1962, U-2 aircraft flying over
the island confirmed the existence of a ballistic
missile at a launch site.
The United States chose
not to pursue an immediate invasion.
President John F. Kennedy opted to impose a naval quarantine
or blockade on Cuba
and declared that U.S. forces would intercept any offensive weapons and
related materials that Soviet ships attempted to deliver to Cuba.
Within the past week,
Unmistakable evidence has established the fact
that a series of offensive missile sites
is now in preparation on that imprisoned island.
The purpose of these bases can be none other
than to provide a nuclear strike capability against
the Western Hemisphere.
As both superpowers stood on the edge of nuclear conflict,
diplomatic messages were exchanged.
Ultimately, on October 28, 1962,
Russia announced that construction on the missile sites would cease
and that the missiles
already in Cuba would
be returned to the Soviet Union.
In exchange, Kennedy pledged
that the United States would never invade Cuba and secretly
agreed to withdraw nuclear-armed missiles
from Turkey that had been deployed in earlier
years.
Soon afterward, both sides began honoring their commitments
and a major war was averted.
The construction of the Cheyenne Mountain Complex
was finished shortly before the Cuban Missile Crisis
and the importance of such a facility became strikingly clear.
This fortified command and control center was viewed
as a major breakthrough for defense against long-range Soviet bombers.
Because of ongoing operational and security needs, the Cheyenne
Mountain Complex is not open to the general public for tours.
However, it is still possible
to glimpse what lies inside this massive facility.
A well-known tunnel leads
to the primary entrance,
which features two blast doors weighing 25 tons each.
These doors were engineered to shield the interior of the facility
from nearly any type of attack,
including nuclear, biological,
electromagnetic pulse, and several others.
Anyone entering the Cheyenne Mountain complex
must pass through a security checkpoint.
Anyone lacking authorization to access the complex
is immediately escorted out of the facility.
Moreover, the military personnel inside the complex
monitor the surrounding area on large displays
and report any irregularities to their superiors.
The entryway into the Cheyenne Mountain complex
displays the insignia of four tenants,
including NORAD,
U.S. Northern Command, Air Force Space Command,
and U.S. Strategic Command.
There are multiple buildings inside the Cheyenne
Mountain complex, each rising three stories high.
The main building offers various amenities for personnel,
such as a medical facility, a store, and a cafeteria.
Additionally, there are fitness centers located both inside
and outside the mountain.
The Cheyenne Mountain complex was designed
to withstand a nuclear blast or an earthquake.
As a result, more than 1,000 massive springs
are installed beneath 15 buildings within the complex,
enabling the structures to shift up to one full inch in any direction.
These springs are intended to safeguard both the buildings
and the personnel inside.
Alongside the giant springs,
flexible connectors are installed between various pipes with the
sole purpose of helping
the complex's infrastructure endure a major explosion.
The Cheyenne Mountain Complex
is now overseen by Air Force Space Command
and supports the activities
of several tenant units.
As of 2023, it serves as an alternate
command center for NORAD and U.S. NORTHCOM
and is utilized for crew training.
All the original functions of the complex
were relocated to Peterson Air Force Base,
situated in Colorado Springs.
Currently, NORAD and U.S. NORTHCOM occupy less than 30%
of the floor space within the Cheyenne
Mountain Complex
and account for only 5% of the daily population at the facility.
Previously, this facility functioned
as a joint operations center for NORAD and U.S. NORTHCOM.
Several other units, along with U.S. NORTHCOM,
supported the NORAD missions.
The Cheyenne Complex was a defense hub of the United States
and backed aerospace warning and
control missions. It was also capable
of issuing alerts against ballistic missile or air attacks
targeting North America.
The Cheyenne Mountain Complex was not the only high-profile
underground facility operated by the United States.
Since the early 1960s,
the US military has relied on underground missile silos or missile
launch facilities for storing and launching missiles.
A missile silo is essentially an
underground vertical structure sealed
by a 110-ton blast door on the surface. From the outside,
this door resembles a large concrete slab,
and little can be seen beyond the blast door.
However, there is a vast amount of equipment
and infrastructure behind that door
that is unimaginable to an ordinary person.
Typically, every missile silo contains
a built-in launch control center.
However, in the case of ICBMs like the Minuteman III,
the launch crew is not stationed
at each silo individually.
Instead, two launch officers operate
from an underground launch control center
that is linked through hardened cables to ten other silos.
These silos together are referred to as a flight.
The silos are spaced 10 to 20 miles apart
in an effort to protect
the flight from a hostile strike.
Furthermore, all
the launch control centers of a flight
are part of a missile alert facility,
where launch crews remain on duty 24 by 7
and maintain dependable communication with the President
and Secretary of Defense.
Complex construction does not only occur on land,
but also far beneath the ocean surface.
Divers have played a vital role in the U.S. military
since the start of the 20th century.
Numerous units and teams dedicated to underwater operations
have been established within the armed forces
to expand
their capabilities
across any environment.
This includes the specialized units
from the U.S. Navy Seabees,
known as the underwater construction teams.
Complexity of the missions carried out
by UCT members demands high levels of preparation
to ensure that objectives
are completed safely and efficiently.
For this reason, training exercises are continuously conducted
in diverse conditions to equip divers
with the necessary skills for underwater tasks.
The training program has evolved since its inception,
reflecting the growing complexity
of underwater construction missions
and the demand for highly trained and specialized
personnel.
Today, training is divided into multiple stages,
designed to build upon the previous one and
ensure that divers absorb all essential knowledge.
Over approximately 23 weeks,
divers complete the Basic Engineer Diver course,
covering topics such as dive physics, surface-supplied air diving,
and underwater construction techniques.
Through this training,
students develop proficiency in construction tasks,
like underwater welding, cutting, and surveying maritime environments.
After finishing the course
and gaining a few years of experience,
Divers can pursue the advanced course focused
on diving supervisor training and demolition operations oversight.
With this training,
divers gain the ability to perform a wide range of activities,
including maritime infrastructure evaluations.
These assessments involve closely examining the physical condition
and capacity of marine facilities.
Using their training,
UCT divers employ a broad array of tools and techniques
to gather data on the condition
of structures,
such as docks and mooring systems.
The latter is crucial for securing vessels in port,
so its integrity is essential for the safety of ships and docks.
When inspecting such systems, divers utilize several methods.
The simplest approach involves visual
inspections conducted by the team.
searching for any signs of wear or corrosion in the structure.
However, this type of assessment
is insufficient on its own,
so more advanced instruments, such as ultrasonic sensors,
are used to measure thickness
or bathymetric tools to map the seabed around the mooring system.
Similar or even greater levels of complexity
arise during underwater drilling
and welding operations.
In these cases, the tools used pose greater risks to divers
and can have significant impacts on the surrounding environment.
Therefore, to perform these operations,
the team must develop a detailed planning schedule
to ensure that the work creates minimal disruption
to the marine ecosystem.
When using tools that generate intense vibrations,
such as pneumatic or hydraulic drills,
attachment points must be carefully managed
so the diver can maintain control of the equipment.
In case of welding, divers
rely on hyperbaric welding,
which can be conducted either wet in open water
or dry inside a specialized enclosure.
All of this expertise is essential,
not only for construction work,
but also for underwater demolition.
Such operations are carried out
when it becomes necessary to remove outdated structures or
eliminate hazards in preparation
for new construction.
These procedures generally begin with evaluating
the structures to be removed, as well as the
surrounding conditions and their vulnerabilities.
This analysis enables the team to develop a demolition plan
and determine the most effective
methods to achieve the desired outcome.
Before placing explosives,
divers typically clear the area around debris or other obstructions
using hydraulic tools
or other equipment.
Divers then wrap explosive cutting tape around structures,
such as piles or beams, to cut
through the material efficiently
and allow the team to remove the components with ease.
From hardened command centers buried deep within mountains
to missile silos scattered
across vast landscapes
and highly trained divers operating beneath the ocean surface,
this script illustrates how the United States built layered
and resilient defense infrastructure.
Whether underground or underwater,
these systems and the people who operate them ensure continuity,
Security and readiness in the most extreme environments imaginable.
That's the end of this video. I hope you enjoyed it.
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