The Days Of Army Air Defense Systems Firing Just One Type Of Interceptor Are Ending

The U.S. Army now has at least five named programs seeking new anti-air interceptors of various tiers to collectively address everything from advanced hypersonic missiles to small weaponized drones. In the process, an important central theme is emerging: the service’s days of fielding air defense systems that can only use one type of interceptor look to be increasingly over. For the U.S. military, the impacts from the war with Iran have made clear that diversifying munitions stockpiles and supplier bases is no longer just valuable, it is critical.

Army Lt. Gen. Frank Lozano, the service’s Portfolio Acquisition Executive for Fires, highlighted this growing trend yesterday during a panel discussion at the Association of the U.S. Army’s (AUSA) main annual convention, at which TWZ has been in attendance.

Secretary Hegseth, second from the left, seen in front of a launcher for the Patriot surface-to-air missile system during a tour of Redstone Arsenal in Alabama earlier this year. Army Lt. Gen. Frank Lozano is seen at far right. DoW/USN Petty Officer 1st Class Alexander Kubitza

To provide some immediate context, with the exception of Patriot, the main ground-based air defense systems in Army inventory today are fielded with just one type of interceptor. In the case of Patriot, the service’s procurement of new interceptors had also been increasingly limited to just one type, the PAC-3 Missile Segment Enhancement (MSE). Production of the preceding PAC-3 Cost Reduction Initiative (CRI) missile ended in 2023. Just earlier this year, the Army placed its first order in decades for new PAC-2 Guidance Enhanced Missile-Tactical (GEM-T) missiles, an older interceptor design for Patriot that has remained in production primarily for U.S. allies and partners.

A graphic showing different interceptor load options for existing trailer-based Patriot launchers. Lockheed Martin

Separately, the Army is in the process of fielding Enduring Shield, a new middle-tier air defense system designed to handle multiple interceptor types. However, the service is currently only acquiring AIM-9X Sidewinders to load into them. We will come back to this later on.

An Enduring Shield launcher. USAF Pfc. Sang Woo Choi

“We have the capabilities we need to have to fight and win, but it’s our job to ensure that victory is achievable in the future inside of any dynamic environment scenario fight we might find ourselves in,” Lt. Gen. Lozano said yesterday. “So, it’s incumbent upon Mr. Ingraham [ Assistant Secretary of the Army for Acquisition, Logistics and Technology Brent Ingraham] and I to continue to be creative and looking at, well, should we buy GEM-Ts because they’re being produced?”

“GEM-Ts are a really good missile in the battlespace within they operate. I mean, they’re being employed today by air defense brigades around the world,” he continued. “So if we have the opportunity, it’s probably something we should take advantage of, and we’re looking at doing that.

“We’ve had a lot of discussions about even more interceptors. From a PAC-3 MSE perspective, our goal has always been to get to 2,000 [per year],” he added. “Why we’re running programs like LCI [Low Cost Interceptor], and NGSRI [Next-Generation Short-Range Interceptor], and NGCM [Next-Generation C-UAS Missile], and Second Interceptor, is because I think the easy button answer is just buy more of a great missile. We’re going to buy more [PAC-3 MSEs], but when we start talking about overall missile output, we start looking at numbers like is it 4,000, is it 6,000, is it 8,000, we’re looking at a diverse set of capabilities.”

The LCI program is seeking a lower-cost and lower-tier interceptor for Patriot with a unit price of no more than $1 million. PAC-3 MSE’s average unit cost has been around $4 million in recent years.

A PAC-3 MSE interceptor seen being launched. US military A Patriot launcher fires a newer PAC-3-series missile during a test. DoD

NGSRI is the Army’s program to find a replacement for the venerable Stinger. The new missiles have to be compatible with existing vehicle-based and man-portable launchers.

A US Army soldier fires a Stinger from a man-portable launcher during training. US Army

The Army is working to field a new counter-drone interceptor through NGCM. Those missiles will be integrated into launchers the service has now for the Coyote interceptor.

The Second Interceptor effort is for Enduring Shield, which is also known as the Indirect Fire Protection Capability Increment 2 (IFPC Inc 2). The main goal there is to provide increased capability against incoming cruise missiles compared to the AIM-9X.

There is also the Army’s Future Interceptor effort, which also came up separately at the panel yesterday, and is also for Patriot. Unlike LCI, the aim here is to acquire a new interceptor with improved capabilities against hypersonic missiles and other upper-tier threats.

Historically, Army programs like these would eventually result in the selection of a sing

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