US Navy E-6B Mercury refueling from a KC-135 Stratotanker.
By.Scott Jackson
09/24/2025
On the night of September 23-24 both France and the United States carried out separate nuclear exercises. These exercises act as apart of a deterrence strategy aimed at making any potential adversaries think twice about attacking. They also provide real life training for the crews involved preparing them for a day that they hope never happens.
Some components of these drills were monitored in real time.
COST43 a U.S. Navy E-6B Mercury.
COST43 the callsign for a U.S. Navy E-6B Mercury, the Airborne Nuclear Command Post and Communications Relay. The jet is seen in the above image heading back to Ramstein AFB, Germany after this mornings nuclear exercise by U.S. Strategic Command (STRATCOM) over Northern Europe.
French media reported that last Thursday night while patrolling in international airspace over the Baltic Sea a Atlantique 2 French MPA (Maritime Patrol Aircraft) was targeted by the radar of a S-400 air defense system. This aircraft additionally had its radar jammed, a constant problem around the Kaliningrad area for commercial as well as military flight, but added with that the fact it was lit up by a S-400s fire control radar at the same time shows a clear case of aggression and attempted intimidation on the side of the Russians.
Atlantique 2 MPA
The French military viewed this for the hostile act it was with Colonel Guillaume Vernet, the spokesperson for the French armed forces saying “Illuminating our aircraft in international waters with radar is an aggressive action. The professional attitude of the crew prevented any escalation“.
S-400 Triumf (NATO reporting name: SA-21 Growler)
While the French navy regularly sends Maritime patrol aircraft into the Baltic for the NATO mission to ensure safety of navigation and air and sea policing as well as surveillance of Russian forces. Recently the deployment of these assets have been increased in response to several recent incidents in the past several months where underwater electric and data cables have been damaged or cut.
The EstLink 2 cable carried electricity between Estonia and Finland before December when if was damaged by a ship, the EagleS which had allegedly dragged its anchor across it and several other cables damaging them. The ship and crew have been impounded since that incident pending investigation. EagleS is believed to be apart of the Russian shadow fleet, a fleet of cargo and oil transport ships using ships flagged in other countries but being used to circumvent sanctions on Russia.
Allied Command Operations (ACO) which is responsible for planning and carrying out all NATO operations has announced Baltic Sentry.
“Baltic Sentry will deliver focused deterrence throughout the Baltic Sea and counter destabilizing acts like those observed last month,” said U.S. Army General Christopher G. Cavoli, Supreme Allied Commander Europe. “It is indicative of the Alliance’s ability to rapidly respond to such destabilization, and shows the strength of our unity in the face of any challenge.”
Baltic Sentry is described as a “multi-domain mission taken forth by NATO in the Baltic Sea to deter any future attempts by a state or non-state actor to damage critical undersea infrastructure there. NATO views the undersea links as critically important to the defense of these nations.
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