The U.S. Navy’s flattop fleet—comprising Carrier Strike Groups (CSGs) and Amphibious Ready Groups (ARGs)—remains broadly stable in carrier disposition this week, with no major changes to the global posture of nuclear-powered aircraft carriers. However, significant movement continues within the amphibious warfare community, where force employment is increasingly defined by disaggregation, tailored tasking, and regionally optimized Marine Air-Ground Task Force (MAGTF) constructs rather than traditional three-ship ARG/MEU deployments.
The most notable development is the continued operationalization of a “sub-optimized” Littoral Combat Force (LCF) concept in the U.S. Southern Command area of responsibility. This model has effectively replaced the standard Iwo Jima Amphibious Ready Group with a tailored deployment built around the 24th Marine Expeditionary Unit, now designated LCF-24. The shift represents one of the clearest field implementations of the U.S. Navy’s evolving distributed maritime operations doctrine, which prioritizes flexibility, modularity, and mission-specific force packaging over legacy integrated group deployments.
The deployment of LCF-24 reflects a deliberate restructuring of amphibious employment concepts. Rather than operating as a traditional three-ship ARG centered on a single amphibious assault ship, the Marine Air-Ground Task Force—comprising more than 1,300 Marines and Sailors—has been configured for distributed operations across both afloat and ashore nodes.
According to SOUTHCOM statements, LCF-24 is “a purpose-built MAGTF engineered for distributed operations,” capable of executing a wide range of mission-essential tasks. These include quick reaction force operations such as embassy reinforcement, tactical recovery of aircraft and personnel (TRAP), and humanitarian assistance and disaster relief (HADR) missions. The force is also structured to operate from both shore-based infrastructure and the amphibious transport dock USS Fort Lauderdale, which remains forward deployed in the Caribbean theater.
This model is closely aligned with statements from senior Navy leadership earlier this year. Chief of Naval Operations Adm. Daryl Caudle described tailored deployments as a mechanism for “force multiplication,” emphasizing the ability to “punch bigger than yourself” by using modular force packaging to increase operational reach without proportional increases in deployed hulls. In practical terms, LCF-24 represents an early test case for this concept at scale.
The broader amphibious fleet continues to demonstrate a pattern of disaggregation across multiple theaters. The Boxer Amphibious Ready Group (ARG), initially reported to be heading toward the Middle East, has instead fragmented into geographically dispersed task elements.
The amphibious assault ship USS Boxer departed Singapore on May 30 following a 12-day logistics and maintenance stop at Sembawang. The port visit coincided with regional engagement activity and senior defense diplomacy events in Southeast Asia. After transiting the Singapore Strait eastbound, Boxer entered the South China Sea, based on AIS tracking and open-source ship observations.
Meanwhile, the dock landing ship USS Comstock is operating in the U.S. Central Command area of responsibility. It is currently operating alongside elements of the Tripoli ARG, which has also been dispersed across the region. Reporting indicates these forces are engaged in maritime security operations tied to ongoing regional tensions, including enforcement of maritime pressure measures affecting Iranian-linked shipping lanes and port access.
The amphibious transport dock USS Portland has been observed operating in the U.S. Indo-Pacific Command theatre, conducting training and exercises consistent with amphibious readiness cycles. The separation of the Boxer ARG underscores a broader operational reality: traditional ARG cohesion is increasingly secondary to task-organized distribution across competing global requirements.
After an extended operational period approaching ten months, the USS Iwo Jima and its embarked 22nd Marine Expeditionary Unit (22nd Marine Expeditionary Unit) are returning to the United States following sustained operations in the SOUTHCOM region. The group was recently observed off Topsail Beach, North Carolina, marking the final phase of its redeployment transit.
The USS San Antonio returned to Norfolk in late April after completing its portion of the deployment cycle. USS Fort Lauderdale remains forward deployed in the Caribbean as part of the ongoing LCF-24 construct, continuing to provide afloat command-and-control capacity for distributed Marine operations.
This transition illustrates a broader trend in amphibious force management: MEU deployments are becoming less synchronized across full ARG formations and more subject to staggered return cycles based on regional demand and ship readiness constraints.
Back in the United States, amphibious forces are heavily engaged in training, certification, and public engagement events rather than combat deployments.
USS Kearsarge is currently in New Orleans participating in Sail 250, a large-scale maritime celebration marking the 250th anniversary of the founding of the United States. Prior to this event, Kearsarge completed landing deck certifications and has been conducting east coast workups to maintain aviation and amphibious readiness.
USS Makin Island (USS Makin Island) recently completed Surface Warfare Advanced Tactical Training (SWATT) on May 28. The ship is now in an intensive pre-deployment training cycle designed to prepare for a future ARG deployment. This phase includes integrated air defense, surface warfare scenarios, and amphibious assault rehearsal operations, all designed to validate combat readiness.
USS Essex returned to its homeport in San Diego after participating in Los Angeles Fleet Week activities. The ship’s recent schedule reflects a mix of public engagement and short-duration training events typical of post-deployment reset periods.
Several major amphibious assault ships remain in maintenance or sustainment periods, highlighting the cyclical availability challenges inherent in the nine-ship big-deck amphibious fleet.
USS America (USS America), USS Bataan, and USS Wasp are either currently undergoing maintenance or have recently completed extended yard periods. These availability gaps continue to constrain the Navy’s ability to consistently generate full ARG formations at sea, reinforcing the shift toward disaggregated and task-organized deployments.
The cumulative effect of these deployment patterns is a gradual but visible transformation in how the U.S. amphibious fleet is employed. The traditional model—three ships operating as a tightly integrated ARG supporting a single MEU—is increasingly being replaced by modular force packages optimized for specific geographic and mission demands.
The LCF-24 deployment in SOUTHCOM is the clearest example of this transition in practice. By dispersing amphibious capability across shore nodes and a single forward-deployed platform, the Navy and Marine Corps are testing whether distributed MAGTFs can achieve comparable operational impact to traditional ARG constructs while offering greater flexibility and lower logistical concentration risk.
At the same time, disaggregation of formations such as the Boxer ARG demonstrates both the opportunity and the complexity of this approach. While it enables simultaneous presence across multiple theaters—CENTCOM, INDOPACOM, and beyond—it also raises questions about command cohesion, logistics synchronization, and the long-term sustainability of non-integrated amphibious operations.
As of early June 2026, the U.S. flattop fleet remains stable at the carrier level but highly dynamic within its amphibious components. The emergence of tailored littoral forces, exemplified by LCF-24 under U.S. Southern Command, signals a structural evolution in amphibious doctrine. Meanwhile, the dispersal of the Boxer ARG, the return of the Iwo Jima ARG, and the intensive training cycles of ships such as USS Makin Island and USS Kearsarge highlight a fleet in transition.
The central question going forward is whether distributed amphibious constructs can consistently match the operational effectiveness of traditional ARG/MEU formations—or whether they represent an interim solution to readiness and availability constraints within a shrinking but globally tasked amphibious force.
