Elistair, manufacturer of tethered drones for security applications, participated in Orion 2026, France’s most ambitious joint military exercise in decades. In the exercise, Elistair contributed its Khronos automated tethered DroneBox, used for ISR and tactical communications missions.
Running from February to April, ORION 2026 mobilized up to 12,500 military personnel across the country in a high-intensity, multi-domain scenario involving land, sea, air, space, cyber and electromagnetic domains. More than 1,200 drones of all types were deployed throughout the exercise.
Elistair participated in Phase O4 (April 7–30) following its fisrt contribution during Phase O2 in February, which demonstrated France’s ability to fully integrate into a NATO command structure for collective defense scenario. During the week of April 27, forces conducted offensive exploitation operations, river crossings, retaking of key positions, and live-fire exercises.
The Khronos system
Forces need real-time situational awareness in contested and GNSS-denied environments. The Khronos system provides continuous aerial surveillance from fixed or mobile platforms. It does not depend on GNSS, radio frequency infrastructure, or battery-limited free-flying aircraft.
Khronos deploys from a transportable DroneBox in under two minutes. The system can deliver continuous day and night imagery for up to 24 hours, making it a “pocket watchtower” for tactical units.
The tethered drone operates in GPS- and RF-denied conditions through a secured tether and advanced positioning system. Elistair targets armed forces, law enforcement, civil security agencies, and private security operators in more than 70 countries. The company runs operations from France and North Carolina.
A second MOU was signed with Elistair to introduce tethered unmanned aerial systems into Milanion’s ground and maritime architecture.
The agreements focus on maintaining operational capability in environments affected by electronic warfare, GNSS denial, jamming, spoofing and cyber interference, with technical integration work scheduled to begin after the exhibition and demonstrations planned for later in 2026.
The agreement with NovAtel covers land, maritime and air domains and focuses on operations in contested environments where electronic warfare, GNSS denial and cyber interference are present.
Milanion linked the partnerships to requirements raised by defense delegations at WDS 2026 for unmanned systems that remain operational without dependence on vulnerable networks and that support sovereign-ready integration.
Technical integration discussions with both companies are scheduled to begin immediately after the exhibition. Joint development pathways and capability demonstrations are planned later in 2026 as part of a broader connected autonomy architecture.
Milanion Group was founded in 2020 and is headquartered in the UK, with manufacturing in Abu Dhabi. The company develops autonomous and optionally manned systems for military and security missions across land, sea, and air.
The MOU with NovAtel will embed NovAtel assured-PNT and anti-jam technologies into Milanion assets to maintain navigation accuracy and mission integrity during GNSS denial or interference. The integration supports secure routing, guidance stability, and targeting precision even when GPS signals are degraded or disrupted. This capability is relevant for unmanned ground vehicles, maritime conversions, and airborne systems operating in electronically contested theatres. Milanion links the functionality to survivability and operational continuity during electronic warfare and cyber-disruption scenarios.
By combining assured navigation with persistent ISR and resilient communications, the company aims to maintain autonomous mission performance across multi-domain deployments. The approach integrates sensing, navigation, and communications into a unified architecture to address contested-environment requirements identified at WDS 2026.
Just a couple of pieces of drone news this month — who would imagine flying a fixed-wing drone into the plume of a volcano? And some new advances in tethered drone capability.
Global warming/climate change — a collection of words which can sometimes lead to disputes, disagreements and dismay. These words can fill people with enthusiasm for change and in others have them just shaking heads. I saw a video some time ago made by an eminent scientist who claimed that all the efforts made by humans to pollute over the centuries and the efforts being made now to help the atmosphere, were insignificant when all the junk kicked out on a daily basis by volcanoes around the world was taken into account.
Nevertheless, it’s for sure that the climate is changing — by human hand or by nature — some people are still seeking a scientific basis to establish if it can somehow be remedied — a greener approach which could stop or limit our ability to go on polluting the only world we have, or at least some version of curbing what we are doing to make things worse.
So it was exciting for me to see recent reports of an expedition from last year in Papua New Guinea where an international group used drones in an attempt to measure carbon dioxide, sulfur dioxide and hydrogen sulfide coming out of the active Manam volcano. The objective appeared to be direct sampling of the volcano plume to determine content, not just for measurement alone but perhaps also eventually maybe monitoring changes in gas content to forecast future eruptions.
A series of significant eruptions last took place 2004-2006, and again in 2014, but since then Manam has continued to be explosively active all the way up to the present day. It’s possible to climb almost 6,000 feet to the upper dome, but for more efficient regular monitoring the expedition wanted to demonstrate that a fixed wing drone, operated from a village 2.7 miles away, almost at sea level, would work better. Satellite data on emissions is also available, but apparently no predictions of CO2 content has so far been possible, so land based survey and direct sampling might greatly improve understanding.
Hand launched, with an internal parachute system for recovery, the Titan UAV, which can lift a payload of around 2 pounds to an altitude of 7,500 feet and has a range of more than six miles. For the trip to the volcano, two 4k cameras provided forward and rear views, oversized electric motors were installed to provide more thrust and onboard data capture allowed for subsequent analysis of the vehicle dynamics as well as the gas content of the environment. Live data was also transmitted real-time to the operator and monitoring crew and was also stored for later review. The autopilot on the drone is capable of automatic GPS waypoint navigation and manual flight mode may be engaged by the operator. The drone carries GNSS, barometric altitude, airspeed indication and IMU sensors.
The automatically flown flight path up 5,300 feet to one of the two volcanic outlets on the mountain followed a zig-zag path to a point offset from the smoking caldera, and if the drone failed to then turn and intercept the plume automatically, it was manually maneuvered in level flight into the smoke column. Plume intercept was interpreted as a steep increase in sulphur dioxide concentration, and at the same time there were increases forces on the drone, at times up to 2.5 g, with roll deviations up to 25 degrees and significant uplift. Not unsurprising rock and roll given the energy being released by the volcano.
After each plume intercept the drone then left the area and descended in a spiral to the launch site, being recovered by manual parachute release. Two flights were successful, yielding lots of data for analysis, but there was an upset while in the plume on the third flight and the vehicle was lost, thought to be related to pulsating increases in the velocity of gas released by magma in the crater and what looked like a 7-g increase in forces on the vehicle. The plume was figured to be between 1800 ft and 2,500 feet wide, using the length of time spent in the smoke column and the speed being flown.
The flights were all conducted under Beyond Visual Line of Sight (BVLOS) conditions as agreed by the local air control agency and significant drone design improvements and flight techniques for subsequent ‘volcano operations’ were recommended. Gas emissions were measured at 3,450 to 4,360 tons/day CO2 and 4,840 to 5,880 tons/day SO2 — so lots of carbon pollution from one of the earth’s most active volcanos, one of around 500 worldwide.
Tethered drones offer advantages for some specific applications such as longer flight times for surveillance. Recent outings by Elistair tethered drone systems have included crowd monitoring and TV coverage for Super Bowl in Atlanta, Ryder Cup golf near Paris France, traffic monitoring in Lyon France, TV coverage for the Alpine World Ski Championships in Sweden, Paris Le Bourget airport approach light monitoring, Trinidad carnival crowd monitoring, Kentucky festival crowd monitoring and communications relay, fire control exercises in Greece, New Year’s crowd monitoring in Vienna and crowd monitoring at Madrid’s soccer stadium.
The Orion 2 tethered drone (Photo: Elistair)
But endurance is a key element for longer term surveillance, so Elistair has come out with Orion 2 which has extended the previous 8-12 hours operations envelop all the way out to 24 hours — and added IP54 dust and water rating, so weather shouldn’t interrupt service.
The tether now extends up to 330 feet so the drone can see out further and it can now also lift a 4.5-pound payload such as a combined ISR (intelligence, surveillance and reconnaissance) and telecom platform. While streaming georeferenced electro-optical and infrared video, 4G/5G communications nodes may also be brought online at the same time.
So an insight into what it takes to fly a drone into active volcano emissions to move us further towards understanding climate change, and improvements in tethered drone endurance. Doubt many of would expect a drone to survive the extreme turbulence created by the energy released from a volcano, or would even try to do so, but one group has been successful and found a new way to monitor activity and measure bad stuff being pumped into the atmosphere. And if we can hover a multi-rotor drone in the air for 24 hours at about 300 feet, who knows what new applications will soon come out of it.
Changes to the Federal Aviation Administration (FAA) operational drone restriction were recently proposed in order to allow some flights over people. This proposed rulemaking appears to be a major step forward. Mail-order delivery flights, newsgathering, real-estate sales movies and building inspection, to name a few markets, all begin to make more sense, maybe even become viable.
Some night operations could also be possible.
Risk assessment methodology appears to be logical; a number of UAV categories are proposed, and there is a way to assess if operators are in compliance.
The Alliance for System Safety of UAS through Research Excellence (ASSURE) undertook a ground impact study to determine the possible risk of injury to people from drones falling out of the sky. Assessments were made using existing automotive standards and a military standard for debris impact, plus there was testing using automotive crash dummies.
It was a lot of work, but the bottom line appears to be that possible injuries to people are more likely to be minor than major. Bear in mind that UAS fly at relatively low altitude, are made with materials that make them somewhat elastic in nature, and that it may be possible for people in a crowd to see a flailing, falling UAV and move to avoid an impact.
Nevertheless, I do have a picture in my mind of a wayward drone crashing to the pavement after hitting a skyscraper in San Francisco, and I’m really glad I wasn’t down on the sidewalk below.
Urban building inspection using drones. (Photo:AeroSIM RC)
Then I read an article by James Poss, a retired military major, who seems to suggest that although the conclusion of the ASSURE assessment was that 2,000 grams was an OK weight for an sUAV to avoid serious injury to anyone, the FAA appears to have proposed limitations for sUAS which are only 1/10th of this weight. This is more in line with the weights in the mil-spec standard that are based on small, fast, solid-metal blast fragments.
It might help us to also consider how often or badly people are injured by golf balls, baseballs, tennis balls or squash/racket balls — for instance, I’ve survived several golf ball impacts and even an impact with a squash racket during play without major damage. These are things we all take in our stride as part of (almost) normal human activity. I wonder how often recreational enthusiasts have actually been injured during model-aircraft flying gatherings?
FAA restricts flights over government facilities
In cooperation with the Department of Justice (DOJ) and the Department of Defense (DOD), the FAA has just established temporary restrictions on drone flights within 400 feet of the lateral boundaries of a number of sensitive federal facilities. This is in addition to previous restrictions over prisons, NGA facilities, DoD ships and other facilities.
The most recent proposed Notice to Airmen (NOTAM) lists federal correctional facilities in almost half of the states in the U.S., several medical centers, U.S. Army facilities, ammunition plants and Pearl Harbor in Hawaii. It’s hard to understand why there aren’t already permanent UAV prohibitions over all such sensitive facilities across the whole U.S. I tried to check status, but the FAA UAS Data Display System didn’t list this proposed NOTAM which apparently goes into force on Feb. 26.
Think it’s probably a question of preventing bad guys from planning or doing harm rather than being shy to be caught on video — but, for sure, these places should be as secure as possible.
The FAA UAS data map shows all drone-restricted areas, once updated. (Screenshot: FAA)
Security at the Super Bowl
Well the game wasn’t the most exciting, with New England doing all that was needed to win in the fourth quarter, but the security for the event in Atlanta was humongous.
The area around the stadium was cleared of threats even before the game, attendees were screened for prohibited items and the airspace within 30 miles was restricted for general aviation and drone access. There were even Defense Department F-16 airspace patrols, and the Customs and Border Patrol had a Black Hawk helicopter available to intercept any aircraft penetrating the exclusion zone.
Nevertheless, the FAA still approved the operation of two tethered drones. One was flown close to the stadium by security personnel to provide live images of crowd movements in and around the stadium. The second system was operated at 45 meters above the rooftop of the CNN building facing the Mercedes Benz Stadium. CNN used it to provide aerial imagery of the scene before and after the game.
Elistair base station and DJI M200 at Super Bowl. (Photo: Elistair)
The tethered drone setup included two DJI M200 drones and two Elistair Ligh-T base stations, with monitoring, control and power provided to each drone by lightweight tethers. The security system was continuously operationed for 10 hours of captive flight during the Super Bowl, and for 14 hours total over two days — all while tethered to the Ligh-T control station. Security officials expressed their interest in using this solution more often because of the ability to follow a subject continuously without having to switch from one fixed camera to another, which risks losing the subject.
To sum up, new pending FAA regulations that support operations over people may have a few flaws. Other new FAA rules are aimed at protecting DOD and DOJ facilities from drone overflights, and tethered drones were used at the Super Bowl for crowd security and by CNN for color coverage.
New applications, new opportunities and preventive controls to maintain security at sensitive facilities — all moving in the right direction.
