Can the Army Close the Critical Drone Gap?

Why It Matters

A new Congressional Research Service report on the U.S. Army's Maneuver Short-Range Air Defense system puts a sharp lens on one of the Pentagon's most pressing modernization challenges. It needs to rebuild ground-based air defenses that were largely abandoned after the Cold War, but are now urgently needed in an era of proliferating drones and unmanned loitering munitions.

For decades, the Army assumed it would operate under friendly skies. That assumption shaped force structure, procurement, and doctrine. The wars in Iraq and Afghanistan reinforced it. But the battlefield footage coming out of Ukraine and Gaza has upended that calculus, and the Army is now scrambling to use systems capable of protecting ground forces from the full spectrum of aerial threats, from small commercial drones to cruise missiles.

The M-SHORAD system, formally named the SGT Stout in honor of Vietnam-era Medal of Honor recipient Sergeant Mitchell William Stout, is the Army's primary answer to that gap. The CRS report makes clear that the stakes around this program extend well beyond a single weapons platform. They touch on readiness, deterrence, and whether the Army can field capable air defenses fast enough to matter.

The Big Picture

The Army's short-range air defense system was hollowed out after the Cold War ended. The logic at the time was that if the U.S. controls the skies, ground forces don't need layered protection from aerial threats. That logic no longer holds.

The SGT Stout is built on the M-1265A1 Stryker Double V Hull chassis and carries a weapons package developed by Leonardo DRS and contracted through General Dynamics Land Systems. The platform integrates AGM-114L Longbow Hellfire missiles for ground targets, FIM-92 Stinger missiles for aerial and drone threats, an XM914 30mm cannon, an M-240 machine gun, and a multi-mission radar capable of tracking both ground and air targets.

Each M-SHORAD battalion fields 36 SGT Stout vehicles. Units across the Active Army and Army National Guard are receiving the system on a rolling schedule, with some National Guard units, including the Ohio Army National Guard, not slated to receive it until fiscal year 2029.

The program is structured in increments. Increment 1, the Stryker-based kinetic platform, is already being fielded. Increments 2 and 3 are focused on directed energy upgrades, including a High Energy Laser under competitive development. Increment 4 goes further, with Army leadership signing a combat capability development document for a modular "sled" concept, a weapons payload designed to mount on multiple platforms and address threats ranging from small Group 1 drones to fixed-wing aircraft.

That incremental architecture reflects a broader challenge facing Army planners. The threat is evolving faster than acquisition timelines typically allow. The modular approach is an attempt to build in adaptability from the start.

The Budget Problem

Despite the urgency of the threat and the Army's stated modernization priorities, funding for M-SHORAD and its energy variants generally declined from fiscal year 2021 through fiscal year 2025. The Government Accountability Office has flagged that Army air and missile defense programs would benefit from applying leading acquisition practices, a signal that oversight concerns are not limited to funding levels alone.

The fiscal year 2026 Army budget appears to mark a turning point. The Army has committed $729 million specifically for M-SHORAD as part of a $2.0 billion investment in key air defense capabilities. The fiscal year 2027 Army procurement budget request follows with $712.7 million for 14 additional SGT Stout systems. The Army Transformation Initiative, announced in May 2025, broadly aligns with these priorities, though it did not introduce new M-SHORAD force structure changes beyond plans already in place.

Political Stakes

For the Administration

The Trump administration's defense posture has emphasized rebuilding military readiness and confronting peer competitors. M-SHORAD fits squarely within that framing. The fiscal year 2026 and fiscal year 2027 budget requests signal that the administration views accelerated procurement as a priority, but the years of declining budgets that preceded this moment create a credibility gap that will require sustained investment to close.

For Congressional Republicans

The defense hawks in the GOP conference have long argued that the Army's air defense divestment was a strategic error. The CRS report gives them fresh ammunition. The question is whether that sentiment translates into appropriations that match the Army's stated requirements, or whether broader budget pressures, including debates over the defense top line, squeeze the program before it reaches scale.

For Congressional Democrats

Democrats on the Armed Services and Appropriations committees have their own oversight issues here. The GAO's findings about acquisition practices give them a legitimate hook for scrutiny, separate from any broader disagreements over defense spending levels. Questions about whether the Army is moving fast enough, and whether the energy timelines are realistic, are bipartisan concerns.

For the Public

The conflicts in Ukraine and the Middle East have demonstrated repeatedly that cheap and widely available unmanned systems can neutralize expensive conventional platforms. The Army's ability to protect its own forces from those threats is a readiness question with direct implications for deterrence.

The Bottom Line

The CRS report on the M-SHORAD system depicts an Army trying to rebuild, under time pressure, a critical capability that it allowed to atrophy for a generation. The fiscal year 2026 and fiscal year 2027 budgets suggest the administration is serious about acceleration. But with some National Guard units having to wait until 2029 to field these systems, with energy upgrades still in development, and with the GAO raising acquisition concerns, Congress faces a clear oversight responsibility. It must ensure that the investment being requested now actually closes the readiness gap before the next conflict makes the cost of inaction undeniable.

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