The attack was made by a large nuclear submarine more than 100 meters long. At this time, the submarine that invaded the sea area controlled by the expedition could be said to be fully armed, and its missile launch bay was loaded with two activated Tomahawk cruise missiles, ready to be launched at any time.

The entire nuclear submarine is also maintaining absolute radio silence, without any communication with the outside world. It sails quietly at a depth of 300 meters below the surface.

The noise created by the fan blades stirring the water is only equivalent to that of a few household electric fans! The whole submarine slowly approached its target like a ghost. At its current speed, it will be in the outer waters of Base 2 in two hours.

If it weren't for the fact that the expedition's defense and early warning systems on the island were too advanced, this strategic nuclear submarine, which is the crystallization of various high-tech technologies in the main plane, would not have been noticed even if it sailed to their shore.

"Whose ship is this?" How did they find us? Also, why weren't we alerted in advance? In the main control room of the space station, Shen Chao, who had just arrived, asked these three questions in one breath with a somewhat questioning tone.

You know, in the past few months, they have invaded and controlled the military network of the main plane like visiting their own garden. No deployment of armies by the various powers of the main plane can escape their surveillance.

In this way, they have set up a monitoring mechanism, and if there is any investigation of them in the military network or the sending of troops into the areas under their control, the monitoring procedures will issue an early warning.

So theoretically, if the U.S. submarine that invaded the waters under their control followed normal procedures, they should have been warned of the attack before it went to sea.

"I don't know, the unmanned submarine I sent hasn't arrived yet. However, it is not on all the task lists of the General Staff of North America and the NATO military command. There is also no information in the military networks of China and Russia, this is a "ghost" ship......"

Jonathan answered Shen Chao's question while remotely dispatching a group of drones and unmanned submarines to investigate. Ghost ships are their name for ships that cannot be defined as belonging.

Although they had scanned the approximate size of the invading submarine, they had not yet determined which major power was the submarine of the main plane. Only preliminary scan results were confirmed to be a nuclear submarine.

"Wait, there's an image. See. A few seconds later, Jonathan brought up a window that had just appeared in the corner of the screen. That's a real-time image of an enemy submarine taken by an unmanned submarine that has just arrived in nearby waters.

Their unmanned submarine was brought back from the world of Mass Effect and was the standard defensive weapon of the Hana.

The Hana are a race that lives in the deep sea. The shape is much like a jellyfish, and the technology for building underwater vehicles is extremely developed, and the underwater vehicles they build are fast, stealthy and adaptable.

And in the gravity and seawater environment of the earth's standards. The ultimate diving depth of its underwater vehicle can exceed 17,000 meters! The equivalent of the bottom of the Mariana Trench dives further down to a depth of Mount Everest!

By any angle, these unmanned submarines have blown up any underwater vehicle in the main plane, so when Jonathan sent over a close-up view image from their unmanned submarine. Shen Chao was not surprised at all.

As long as the other party turns on the active sonar and leaks its own storage, it will not be able to detect several 7-meter-long unmanned submersibles in close proximity.

And even if the other party turns on active sonar, there is a 99% chance that their outdated sonar filtration system will recognize several submersibles that follow them in the form of bionic cetaceans.

At this time, the two unmanned submarines they controlled were less than 50 meters away from the hostile submarine in a straight line, and were sailing in formation with the submarine approaching the second base. And carefully scan the other party's hull.

The image that finally appeared in the control room of the space station zero was a composite of the Guò tomography and enhanced optical images.

Since they had just arrived at the scene, scanning and processing had just begun, so they could only see the vague outline of the submarine not far away. As for why intensify optical images?

Because the water is 300 meters, although it is not very deep. But the sunlight on the water is almost the same as the complete absence here. Without intensification, it is impossible to see anything in the conventional spectrum.

Through a composite of the two images, they are now able to see the silhouette of each other's submarines. It's still vague, though. But the model used to identify the other party is sufficient.

: "Length, 115 meters! It's Virginia-class! Jonathan reported in surprise when he saw this, not because of surprise. And as his voice just fell. A red warning window pops up on the screen.

It was an emergency scan report that had just been generated. There is a very clear information about the scan results in it, and their unmanned submarine has scanned two activated thermonuclear weapons on the opponent's submarine!

Although it is a small-yield nuclear weapon and uses a "very low-speed" missile system as a launch vehicle, their screening process still labels it as a major threat.

"Oh, it looks like they're prepared. Shen Chao smiled when he saw this, and commented, they already had a plan for a nuclear attack.

Moreover, he is now several astronomical units away from the second base, and even if the entire earth explodes now, it will not affect him much.

However, Jonathan, who is narrated by him, is not as calm as he is, because it is the military power of his "homeland" that is attacking. And he knew what the expedition had planned for such a situation.

In short, if the other side dares to really launch a nuclear bomb like the second base, then today next year will definitely be the death date of all the crew on this nuclear submarine, and it will definitely pull half or the entire United States back, and this result depends on how many nuclear weapons they will launch!

Therefore, his nervousness is understandable, although he was hunted down by the intelligence agencies of the 'motherland' before, but it is also his hometown anyway, so it is still impossible for him to calmly face the fate of his hometown that may be leveled.

"Captain, they have two missile tubes already open! Ballistics can be fired at any time. Should we evacuate the personnel on the base? Jonathan nervously asked when he saw the warning sign on the screen. He knew that the few words that Shen Chao was going to say later would most likely directly determine the fate of his motherland and a large number of other countries.

They now have more than a dozen non-combatants left behind in the second base, who are responsible for the later construction of the lunar base. If you evacuate urgently, you can evacuate in a few minutes.

"No, the remaining personnel of the second base do not need to be evacuated. Also, they're not here to level it, at least not yet. You're too nervous. ”

Shen Chao patted Jonathan on the shoulder, stopping him from signaling the evacuation of the second base. He knew that the other side was afraid that he would retaliate exactly as planned after a possible nuclear strike.

If that happens, the United States on the main plane will be ruined. But this worry is really unnecessary, and they didn't have any spacecraft when the original safety regulations were in place, let alone warships and space stations.

So at that time, they were very sensitive to any possible blows, and the plan they made at that time for any possible blows was to cut the grass and eradicate the roots, in order to continue to stay in the main plane.

But now, they have the money, the technology, and the base, and they really don't need any place in the main plane. What if the other side finds out, what about a nuclear strike? It's not that they can't bear it now.

If there really is any country that is stupid enough to dare to attack their second base, then it is a big deal for them to take out the leadership of that country, either openly or covertly, and then what to do. I can't go into trouble with ordinary people.

Moreover, according to his observations, the purpose of this US submarine should not be to simply carry out a nuclear strike mission, if that were the case, they would have already entered the range of missiles, and there was no need to continue to get closer.

Moreover, Shen Chao had just seen two black spots on the top of the enemy submarine that he was familiar with on the image of the monitor.

"If you look closely, it's ASDS (Advanced Frogman Delivery System). Their missiles should be a precautionary measure or a last resort. It won't be launched in the first place. ......" Shen Chao said this and patted Jonathan on the shoulder. Remind him of this important detail.

The so-called advanced frogman delivery system is actually an emergency passage from the inside of the submarine to the outside, plus several external small submarine thrusters, which are generally used to secretly drop small forces on the seaside.

He knew several small submersibles mounted on the hulls of enemy submarines, and he had used them in several high-risk missions when he was in the third echelon before.

And he knew that the system was basically seal-only on the main plane. Therefore, as soon as this is taken together, the other party's purpose is very clear, which is nothing more than the traditional secret landing and forcible reconnaissance.

It seems that the US military only suspects that the source of interference is here, and does not know their details, otherwise they should be facing a direct attack by ballistic missiles at this time.

"How do we deal with it?" Jonathan breathed a sigh of relief when he saw this, it seems that he does not have to worry about the "motherland" being leveled for the time being.

"Wait, wait for them to get closer, wait for them to send the landing team, and then catch them all." I want to see how much information they have. As for the submarine, be ready to sink it, and if it makes a rash move, blow it up and sink it on the spot. ”

Shen Chao's tone was relaxed, as if he didn't care at all. In fact, he really didn't care, because the main energy of him and the expedition team now still needed to be on the Legendary Plane, and as long as the main plane didn't declare war on them from the whole world, there was nothing to pay attention to.

"Oh, by the way, turn off all the military satellites we can control, block their military communications. Cut off all frequencies of communication signals within this sea area. ”

Shen Chao said as he drew an equilateral triangle on the map, enclosing millions of square kilometers of sea area, including their second base. Artificially delineated a communication blind spot that will become very famous in the future...... (To be continued.) )