KBR's Firefly Laser to Be Tested Against Drones at US Military Bases
A yearlong Pentagon pilot will test whether a light-based weapon can offer a cheaper alternative to missile interceptors against cheap drones
By AXY Defense Desk ·
Key points
- The Pentagon has selected KBR’s Firefly, a mobile high-energy laser developed by subsidiary Kord Technologies, for a yearlong pilot program on U.S. military bases.
- The system uses a concentrated beam of light instead of missile interceptors, with the goal of defeating adversarial drones at a lower cost.
- A human operator makes the decisions on when and where to fire, while the system tracks targets automatically.
- The Firefly can engage only one threat at a time, so swarms would require multiple systems and prioritisation of the most imminent threat.
The Pentagon has selected KBR’s Firefly, a mobile high-energy laser weapon, for a pilot program that will test how well directed-energy weapons can defend U.S. military installations against adversarial drones. The system is developed by Kord Technologies, a KBR subsidiary, and uses a concentrated beam of light instead of missile interceptors. According to Military Times, which reported the selection on October 16, the program is intended to show whether this approach can bring down drones at a lower cost than existing methods.
The reporting describes the Firefly as part of a broader effort by the U.S. military to address a problem that has grown quickly in recent years: inexpensive drones that can be built or bought in large numbers but are difficult to stop economically. The source material notes that shooting them down can mean firing multimillion-dollar missiles at aircraft worth only a fraction of that price. The laser is being presented as a possible way to close that cost gap.
Why cheap drones are a costly problem for military bases
Small drones have become a feature of modern conflict and are now widely available to governments, armed groups and commercial buyers. Their low price is the main reason they are so hard to counter. A drone may cost little more than a consumer electronics product, while the missile interceptors designed to destroy aircraft are built for much higher-value targets. When an adversary can launch many cheap drones, defenders face an imbalance: each expensive interceptor used on a single inexpensive drone can quickly drain budgets and stockpiles.
Military planners refer to this challenge as counter-unmanned aircraft systems, often shortened to C-UAS. Fixed installations such as air bases and logistics hubs are attractive targets because they hold valuable equipment and personnel and are difficult to move. That is why the Pentagon is testing defenses at bases rather than only on mobile units. The question for commanders is not just whether a weapon can destroy a drone, but whether it can do so repeatedly, affordably and with enough reliability to be worth fielding.
How the Firefly high-energy laser is designed to work
A high-energy laser is a type of directed-energy weapon. Instead of firing a physical projectile, it delivers energy as a focused beam of light that can heat and damage a target until it fails. The Firefly is described by its maker as a palletized mobile laser, meaning it is built to be packed onto a pallet and moved as a unit. Part of the system is shaped like a modular, futuristic camera lens, according to the reporting.
The operating sequence described in the source material combines radar, human judgment and automated tracking. When the radar detects a potential threat, it sends a cue to a human operator, who investigates further. Software includes target-list features that can help the operator identify objects that might be threats. Built-in cameras allow the operator to zoom in on an unknown object, which could be a bird, an airplane or a drone. Once the operator decides, the system tracks the threat and aims the laser at a chosen part of it.
KBR senior director David Zoller Jr. said that the system “still has a person that decides not just when to fire, but also where to fire.” The source material says the automated tracking runs on the AI capability of the system, but that the operator behind the joystick makes the decisions. Zoller described the laser as delivering “weaponized light” that can burn a hole through a target, and said it can be aimed at a specific component such as a propeller, engine or fuel tank.
The company also said the system can operate in temperatures ranging from negative 15 to 35 degrees Celsius, a range that is relevant for bases in very different climates. During an August demonstration in Alabama, company officials said a truck-mounted version needed only a few seconds to down a small drone.
Zoller also pointed to training as a practical advantage. He said the controller’s familiar design “reduces the amount of time that it takes to train somebody because they already know what that feels like.” For a military force that must train large numbers of personnel, the ease of learning a system can matter nearly as much as its technical performance.
What the yearlong pilot program will measure
The pilot program will place directed-energy weapons at military bases across the country for a yearlong assessment. Service members will operate and maintain the systems and collect data on how they perform. The Pentagon, in turn, will gather information on cost and logistics. Those two categories are central to the test: performance shows whether the laser works, while cost and logistics show whether it can be sustained.
The source material does not give a list of bases, a budget figure or a set of performance benchmarks for the pilot. Those details will matter when the results are assessed. A laser that performs well in demonstrations may still face questions about maintenance needs, power supply, crew training and the number of systems required to protect a base at all times.
Limits of the technology and the swarm problem
Zoller cautioned that high-energy lasers are “not a silver bullet.” The most important limitation he described is that the Firefly can engage only one threat at a time. In a drone swarm, where many aircraft arrive together, the system must prioritise the most dangerous target. Zoller said that in a swarm, “I would have multiple systems engaging on the most imminent threat,” suggesting that defenders would need more than one unit to deal with a coordinated attack.
This is a significant point for planners. A single laser may be affordable per shot, but if defending a base against a swarm requires several systems, the total cost and crew requirement will rise. Analysts examining directed-energy weapons often weigh these trade-offs, including how many engagements a system can perform in a short period and how quickly it can reposition or recharge.
The reporting does not describe performance against all drone types, in every weather condition, or in a live combat environment. Those gaps mean the pilot is an important test rather than a final answer to counter-drone defense.
Why the test matters and what to watch next
If the pilot shows that the Firefly can reliably defeat small drones at a lower cost per engagement than missile interceptors, it could change how the military protects fixed sites. Such a result could reduce pressure on expensive missile stockpiles and offer a different layer in a defensive system that combines several technologies. Analysts would likely also look closely at how many systems each base would need and what the total cost of ownership looks like over time.
The next things to watch are the pilot’s locations and timeline, the cost and logistics data the Pentagon collects, and whether the military moves from testing to wider purchases. It will also be worth watching how service members describe operating the system in practice, since their experience will shape whether directed-energy weapons become a routine part of base defense.
The outcome will be shaped by the same basic limits that affect any laser: power needs, the speed at which operators can respond, and the number of simultaneous threats a site may face. For now, the Firefly program offers a clear test of whether light can provide a cheaper answer to a problem that has been driven by inexpensive drones.
Topics: KBR, Firefly laser, Kord Technologies, Pentagon, counter-drone defense, directed-energy weapons, U.S. military bases
Sources: Military Times