Except for the faint sound of instruments and temperature control devices running in the ice nest, the silence around was no different from before.

The undersea tunnel plan, File Snake has been personally involved from the beginning of the plan to the present, and has carried out a year-long training for extreme cold deep-water diving, and the scene just now is strange and weird.

If it weren't for the maximum secrecy of the plan, there would be a multi-functional research ship on the ice at this moment to conduct all-round monitoring of the undersea tunnel and the surrounding sea area.

"Leech squad, four-three-three formation, go into the water to investigate." The file issued an order, and if he didn't go down to take a look at the situation under the water, his heart was not steady.

"Yes."

The leader of the leech team immediately brought an ice cutter and cut a circular hole with a diameter of two meters in the ice sheet.

Then all the members of the leech squad changed into new combat diving suits that were cold-proof and waterproof, brought scuba water, underwater attack torpedo guns and portable detectors, and jumped down from the circular hole in turn.

According to the previous formation, a team of four people, two or three teams, began to dive to the undersea tunnel.

On the wide screen of the submarine combat command room, Vita Shuyue saw that the leech team was cautiously diving, preparing to reach the undersea tunnel, and the corners of her mouth were slightly upturned, "Kidd, what's wrong with the surrounding arrangement?" ”

"The robot's underwater bomb disposal operation has been completed, the camouflage torpedo has replaced the attack torpedo, and the twenty underwater attack robots have lost their combat effectiveness." Vitakid replied with a smile.

"When these people dive to 500 meters, they start fishing, and at the same time activate the magnetic field jamming system." Vita Shuyue leaned back in her chair, the Vita family had not been out of the mountain for a long time, and the Su family actually started the undersea tunnel plan.

This made Vita Shuyue feel a little surprised, but it was only a second of surprise, these conventional methods were just a small trick in Vita Shuyue's eyes, Vita Shuyue was interested in the Type 00 engineering power armor.

Type 00 engineering power armor can be regarded as the most advanced excavation technology now, can be operated by sea and land, sonar detection shows that this submarine tunnel with a depth of 550 meters, has completed the excavation of 100 kilometers of submarine tunnel.

Fortunately, Wen Ya discovered it in time, otherwise it would have been a month to two months at most, and the undersea tunnel would have successfully passed through the Arthur Sea.

After launching from the leech team, the eyes of the file snake never left the monitor for a moment, and now the leech team dived to a depth of 200 meters, and in a few minutes, the leech team will dive to the established target point to check the situation around the submarine tunnel.

"Leech Squad, report back on your current situation." The soldier in charge of surveillance picked up the intercom.

"Now it's 300 meters deep and everything is fine." The leech team leader's voice came clearly from the other end of the intercom.

"Be aware of the surrounding waters."

"Understood."

In the monitor screen, when the leech team dives to a depth of 400 meters, the three teams continue to dive in three different directions.

These three places are where the torpedoes and underwater attack robots are distributed, and at the same time, all members of the leech team turned on the underwater attack torpedo guns and the portable detectors they carried.

"Leech Squad, report back on your current situation."

"A team is about to arrive at the designated ......"

"Team 2 is about to arrive at the designated place ......"

"The three teams are about to arrive at the designated place......"