The U.S. Missile Warning Center (MWC), one of the nation's most critical strategic defense organizations, marked a new chapter in its history during a change of command ceremony held on May 8, 2026, at Cheyenne Mountain Space Force Station, Colorado. The ceremony saw U.S. Navy Capt. Jermaine "JB" Brooms formally relinquish command to U.S. Navy Capt. Gregory "O.G." Arnold after leading the organization through one of the busiest operational periods in its history.
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Presided over by U.S. Space Force Lt. Gen. Dennis Bythewood, commander of U.S. Space Forces–Space (S4S) and the Combined Joint Force Space Component, the event highlighted the Missile Warning Center's essential role in national security. For nearly six decades, the center has maintained an uninterrupted missile warning watch, providing military leaders and national decision-makers with immediate notification of missile launches and other strategic threats anywhere in the world.
A Mission That Has Never Stopped Since 1966
Located deep inside the hardened facilities of Cheyenne Mountain, the Missile Warning Center has operated continuously since 1966. Staffed around the clock, the center serves as one of the Department of Defense's primary hubs for global missile warning, space launch monitoring, and strategic threat assessment.
Its personnel constantly monitor data from multiple space-based and ground-based sensors to detect missile launches, validate potential threats, and rapidly distribute warning information to military commanders, allied nations, and senior U.S. government leaders.
Because of the critical nature of its responsibilities, the organization is often described as carrying a "no-fail mission," where accuracy, speed, and reliability are essential to national and allied security.
Leadership During an Exceptionally Busy Operational Period
During his two-year command, Capt. Jermaine Brooms led the Missile Warning Center through one of its most demanding operational periods in recent history. Under his leadership, the organization processed more than 7,700 global missile events and monitored approximately 190 space launches, while experiencing a remarkable 76 percent increase in operational activity.
This elevated workload reflected growing geopolitical instability across multiple regions of the world. The center supported strategic monitoring during the Russia-Ukraine conflict, Iranian missile attacks targeting Israel, threats to commercial shipping in the Red Sea, and Operation Epic Fury, among numerous other international security events.
Despite the increased operational tempo, the Missile Warning Center continued providing uninterrupted strategic warning capabilities, ensuring military leaders received accurate and timely information whenever global events unfolded.
Responding During the India-Pakistan Crisis
One of the most significant moments during Brooms' tenure occurred during the May 2025 India-Pakistan crisis, when two nuclear-armed nations exchanged missile and drone strikes during a four-day conflict.
According to Space Forces-Space, Missile Warning Center crews delivered the first strategic notification of the unfolding events, providing senior national leaders with critical early warning information needed for rapid decision-making.
In situations involving potential escalation between nuclear-capable nations, even a few minutes of advanced warning can prove vital. The center's ability to rapidly detect, validate, and communicate missile activity demonstrated the indispensable role it plays in maintaining strategic stability and supporting informed national leadership decisions.
Modernizing Training for Future Threats
Beyond managing day-to-day operations, Brooms also oversaw significant organizational improvements aimed at preparing personnel for an increasingly complex security environment.
One of the most notable achievements during his command was the elimination of a 17-year-old legacy qualification program. The modernization effort introduced updated training methods better suited to today's rapidly evolving missile threats, advanced technologies, and operational demands.
By refreshing qualification standards, the Missile Warning Center improved how it prepares operators responsible for monitoring global missile activity and supporting strategic warning missions around the clock.
Recognizing the People Behind the Mission
While operational statistics highlighted the organization's accomplishments, both senior leaders emphasized that the center's success ultimately depends on the highly trained personnel who execute its mission every day.
Lt. Gen. Dennis Bythewood praised Brooms not only for maintaining exceptional operational performance but also for fostering a culture built on teamwork, professionalism, and mutual trust.
During his farewell remarks, Brooms shifted attention away from measurable achievements and instead recognized the dedication of the Missile Warning Center's personnel, often referred to as the "Sentinels."
Serving in a mission that rarely attracts public attention, these professionals quietly monitor global events every hour of every day, ensuring national leaders receive immediate warning whenever potential threats emerge.
Capt. Gregory Arnold Assumes Command
The ceremony also marked the beginning of a new chapter under Capt. Gregory "O.G." Arnold, whose appointment carries historical significance for both the Navy and the broader joint space community.
Arnold becomes the first maritime space officer to command a major Information Warfare Community organization, reflecting the increasing importance of integrating space capabilities into naval operations.
Known throughout the joint space community as "Space Greg," Arnold has built a distinguished career focused on strengthening cooperation between military space organizations and operational forces.
His previous assignments included serving as executive officer to the commander of U.S. Space Command, where he helped translate operational requirements into practical space capabilities supporting military commanders worldwide.
Extensive Experience in Joint Space Operations
Throughout his career, Arnold has contributed to several major initiatives that helped shape today's military space enterprise. His experience includes supporting the establishment of the National Space Defense Center and developing survivability strategies for the U.S. Pacific Fleet that contributed to the creation of Fleet Information Warfare Command-Pacific.
These assignments provided extensive experience integrating space capabilities into broader joint military operations, making him well positioned to lead one of the nation's most important strategic warning organizations.
Upon assuming command, Arnold emphasized the enduring responsibility carried by every member of the Missile Warning Center, noting that the organization's mission begins with providing timely, accurate, and unambiguous warning information that ultimately reaches senior national leadership, including the President of the United States.
Continuing a No-Fail National Security Mission
The change of command at the Missile Warning Center represents more than a routine leadership transition. It underscores the continuity of a mission that has remained uninterrupted for nearly 60 years despite changing technologies, evolving threats, and shifting global security challenges.
As the United States and its allies confront increasingly sophisticated missile threats, the Missile Warning Center remains at the forefront of strategic defense, delivering continuous global surveillance, rapid threat validation, and timely attack warning to military commanders and national leaders. Under Capt. Gregory Arnold's leadership, the organization will continue building on its legacy while adapting to the challenges of an increasingly contested security environment, ensuring the Joint Force and allied partners remain prepared to respond whenever strategic warning is needed.
Source: U.S. Space Forces–Space
