The winter night sky is even deeper and bluer against the white earth, and the whole earth is wrapped in a thin layer of hoarfrost, and the bare tree trunks in the distance disappear in a thin layer of mist. The pen ~ fun ~ pavilion www.biquge.info night is very quiet, as if everything has gone to sleep. No, there was movement, a few lynxes, or the lonely cries of wild wolves echoing throughout the mountains, as if swearing who was the master of the night.

Suddenly, a roar broke the silence of the night, and two black shadows were flying one behind the other. Although the terrain of the mountains is very undulating and steep, these two black shadows are very agile in moving through the mountains. And the height of the treetops, which was a few meters higher, made many birds resting in the jungle frightened.

"Attention, everyone, arrive at the target area immediately, and now start checking the equipment. A somewhat muffled voice came from the radio station that had not been heard for a long time, and this voice was familiar to everyone, it was the voice of the black bear. That's right, because he reminded Yougong, so the mission fell to him, which made him and his team members very happy. However, after receiving the combat mission, everyone's faces became solemn. Yes, this mission was very arduous, but seeing the jealous and envious expressions of the other people next to them, they still gritted their teeth and took this task. Although their chief instructor and team leader repeatedly reminded them not to force it if they couldn't do it, the black bear still patted his chest and took it.

The two black shadows before were two helicopters flying close to the ground, but this was not the Black Hawk helicopter they originally said they were equipped with, but a light helicopter that they had just taken over, and it was said that it was a light helicopter developed by the chief instructor and their company. Compared to the Black Hawk, the light helicopter is very small and can only carry four to five heavily armed special operators and two crew members. And the Black Bears, their special operations team, used two such light helicopters.

"Attention Bear Squad, arrive at the airborne area immediately, please get ready. The pilot's voice came through the headphones.

"The Explosive Bear Team received, Sparrow One, after you and Sparrow No. 2 complete the airborne mission, you will meet at the predetermined location, and we will rush over to meet you immediately after the mission is completed. The black bear replied with his headphones in his hands.

"Sparrow One, good luck with the Bear Squad!" said the pilot and gave a thumbs up to the back store, and the black bear gave a thumbs up.

The two helicopters, after rounding a sharp bend, suddenly opened up the view in front of them. In front of them was a small lake, although it was not big, but there were still several square kilometers. I saw that the two helicopters quickly lowered until the planes were only about one meter away from the lake before hovering, and the wind from the fan blades of the helicopters quickly blew up a circle of ripples on the surface of the lake.

Seeing the pilot's signal, the black bear shouted at everyone: "Wear diving equipment." ”

As he spoke, everyone began to quickly put on their warm wetsuits, and then checked each other. As for the black bear, after seeing that everyone has finished checking, he will quickly put on his diving goggles and respirator and open the air valve. Then he signaled to everyone, and he jumped into the water first, and the other team members also jumped into the water one after another. The black bear that fell into the water and floated up made a gesture to the pilot above the plane, and the pilot realized and quickly flew away from the airborne area. As for the black bear, seeing the plane flying away, he signaled to everyone and slowly sank into the water with everyone.

Although the lake is not frozen at this time, the water temperature is very low, especially late at night, and it is still at the bottom of the lake. The team members who dived to the bottom of the lake turned on a diving lamp, then took out two submersibles from their bags and started them. These two submersibles are also the work of Western Industries, but their principle is very simple: they use batteries to drive propellers equipped with electric motors to generate forward momentum. It's just that there are two technical difficulties here, one is this battery life, that is, the storage capacity of the battery. The second is waterproofing, especially in deep water, where the huge water pressure will test the sealing of the submersible's shell.

After activating the two underwater thrusters, the team members quickly divided into two teams, with the lead team member holding the submersible thrusters in front of them to open the way and grasp the direction. The players in the back grab the legs of the players in front of them and form a long line in turn, while the last team member slowly swings the fins on their feet to provide extra motivation for their team. This formation is a result of training, as it can greatly reduce the resistance of the players to move under the water, and also allow the players behind to get enough rest.

The two teams marched slowly in the dark bottom of the lake, and the faint diving lights could only shine at a distance of seven or eight meters at the bottom of the lake. Occasionally, a few small freshwater fish were interested in the light from the diving lamp and swam around in front of the light. After marching for more than half an hour, I saw the black bear in the queue stretch out his hand and signal, and the two advancing teams stopped. The black bear took out a long tube resembling a periscope from his body and slowly floated to the surface. When it was almost at the surface of the water, the black bear stretched out its long pipe, and saw a long black pipe erected on the surface of the lake, and the curved mouth of the long pipe was slowly rotating, as if observing something. Suddenly, the mouth of the pipe came to a halt in the middle of a relatively isolated building in the wilderness. After observing for a while, the black bear put away the portable periscope and sank to the bottom again. The lake calmed down again, as if nothing had happened.

Back at the bottom of the water, the black bear opened the waterproof map under the light of a diving lamp. After determining their position, the two teams moved forward again. Soon, the two teams came to the edge of the lake, but the water quality of the lake in this place was not very good, and there were not even aquatic plants. The team members had no choice but to give up the underwater lurking and then slowly float up. After confirming safety through periscope observation, the team members showed their heads one after another.

This time, everyone hurriedly picked up the respirator and wanted to breathe fresh air. Although the air in the air tank is also strictly filtered, it is necessary to ensure that the team members operate at a high intensity underwater. So the air in the air tank is not really air, but is mixed. To put it simply, it increases the amount of oxygen, but controls it within a certain range to prevent symptoms such as drunken oxygen or oxygen poisoning caused by long-term oxygen inhalation. So the treated air is still a little smelly, and everyone can get used to it, but they don't like it. It's just that after taking a breath of 'fresh air' outside, everyone hurriedly put on respirators.

(To be continued.) )