The 13-ton medium-sized helicopter carried Zhou Zhiyuan and his entourage towards the center of the southern metropolis, and based on safety considerations, the helicopter's flight missions are now at an altitude of about 2,000 meters, which is also the ultimate altitude of the aircraft's ground effect hovering.

Why are security considerations?

Because the common birds in the city fly at an altitude between 300 meters and 1,000 meters, most of the birds that fly above this altitude are not grouped, and in order to avoid the invasion of corpse birds or mutant birds, the flight altitude of the helicopter will be set at 2,000 meters.

"It's not safe in the air now, and if the pilot drops one, there will be one less, so there is such a rule among the flight officers, and they will climb directly to an altitude of about 2,000 meters before they start moving."

Xu Changshan said through the helmet walkie-talkie

"Are there any large mutations or corpse birds?"

Zhou Zhiyuan asked

"At present, I have not seen that only small flocks of birds in the low-altitude zone can threaten the safety of flight, and they are small in size and difficult to aim with guns, and it is difficult to use flamethrowers in airplanes, so they have to increase their flight altitude until they reach their destination."

Major Gao, who was sitting in the passenger seat and had been promoted, said

The people who came out of this mission were all old acquaintances who had been rescued by wolves before, and the co-pilot and the 3 cockpit machine gunners in the flight were all soldiers rescued by Zhou Zhiyuan.

"After you reach your destination, you can only jump three times at a time, and you can't change to another 3 until the 3 people land, this is because of the space constraints on the top floor of the industrial and commercial building."

Xu Changshan said

"Then Luo Luo and I are the same person, right? We share the same umbrella."

Zhou Qizhiyuan asked

Luo Luo, who got on the helicopter for the first time, was very excited, and kept sniffing in the cargo hold, even if he was lying out of the window, he would not feel afraid, and Zhou Zhiyuan knew that he was full of novelty and fun emotions through the transmission of contact emotions.

"Of course, I suggest that you, Xu Weien, and Liu Jianyu jump first, and then replace the three of them after you land, and then replace them with the three of them."

Xu Changshan said

Soon, the helicopter reached the sky above Nandu, and at an altitude of 2,000 meters, the bustling city was gray, and several wide green rivers were like a strange pattern imprinted on the city.

Zhou Zhiyuan took the lead in jumping out of the cabin with Luo Luo, and then Xu Weien and Liu Jianyu also jumped out together, the three of them opened their hands and feet in a large shape and bent their calves upward, and after a very short time of free fall, the three of them opened the umbrella bag, and when the body was pure, they felt that they rebounded upwards for a short distance, and the three mushrooms began to land slowly.

Zhou Zhiyuan and Luo Luo landed steadily on the top of the building's cooling tower, he put away the umbrella bag and carried it as quickly as possible, and now the equipment is much more expensive than before.

After checking the weapons and equipment on his body, Zhou Zhiyuan took out the two ice axes on his waist, one turned over and cut down a skinny living corpse, and the other sidestepped and flew a female living corpse in a tattered suit to the outside of the building in a parabola.

Then the two who landed on the ground each dealt with the living corpses that rushed next to them, and then packed up their umbrellas and took out their weapons, Xu Weien held a pistol, Liu Jianyu held a rifle, and the two of them each looked at the only entrance and exit on the top floor.

"The landing is complete and the rooftop platform is safe"

Zhou Zhiyuan said into the radio

"Roger, next group of wild wolves, mountain wolves, green wolves"

Xu Changshan responded

Just as the members of the wolf group parachuted in, some people on the upper floors of several buildings not far away looked excitedly at the mushrooms slowly falling from the sky.

"Director, look, that camouflage parachute should be someone from the military!"

A man dressed in a tattered white hung shouted into the air

"Mom, look, there are shiitake mushrooms falling from the sky"

The skinny girl stretched out her withered fingers

It turns out that there are still many people in many corners of the city who are struggling to survive, watching those few green umbrella covers slowly fall as if the sun has sent hope to the world.

"We're back, and there will be a drone hovering over your position later, carrying 2 mine-falling laser-guided bombs and 4 short-arrow air-to-surface missiles, this is your most immediate air support, good luck!"

Everyone's radio headset came from Xu Changshan's words

Chen Guohao, Xie Dongcheng, Zhang Hongda, and Lin Liangxue each put down the square equipment box behind them, and it turned out that in addition to carrying their own weapons, ammunition, and equipment, the four of them also carried the advanced unmanned sentry system developed by the National Academy of Sciences a few days ago, which was the first eye that the military was preparing to bury in the big city.

"Haoshen, what's in this box I'm carrying? It opens like a plate and has a few straight shelves."

Zhang Hongda asked curiously

"The one in your box is the integrated signal antenna, the one in Dongcheng is the solar charging panel, the junior's one is the system base, and the one I carry is the body of the drone, these four modules form an all-weather unmanned sentry system!"

Chen Guohao said while assembling equipment

The whole system requires manpower to combine and deploy each module before it can operate, the solar charging system and the integrated signal receiving antenna need to be placed at a high place, and the optical fiber lines connected between the modules also need to be properly fixed, and the parameters in the drone can only be set after these tasks are completed.

"What, this egg is a drone! Rolling around on the ground? ”

Zhang Hongda asked suspiciously

"Are you stupid? There's a switch here, and when you press it, the four long wings will open up, and the tripod will go down, just pull the rotors apart and start flying."

Zhou Zhiyuan patted Zhang Hongda's head and said

"Oh, how can I understand this kind of thing, it's because I'm curious and I don't understand, so I want to ask."

Zhang Hongda smiled embarrassedly

"This system is equipped with thermal imaging and low-light night vision devices that can fully monitor the surrounding environment, and when there is no power, it will automatically return to home and charge, in addition to remote control through radio and satellite signals, it can also set the flight path in advance so that it can regularly and autonomously reconnoitre."

Chen Guohao was busy and said without raising his head

"In other words, the military doesn't need to send people into this city in the future, as long as you operate the joystick, you can know the general situation in this city?"

Fang Xuan asked

"Yes, if this thing is not malfunctioning or vandalized, the system can periodically follow the path you draw on the software to detect or remotely command to search for a specific area!"

Chen Guohao said

"It seems that the military really wants to fight back to Nandu, but unfortunately, even if their troops are increased by 100 times, it will not be enough for the living corpses in here to stuff their teeth, but at least it is a start, right?"

Zhang Hongda chuckled at everyone

"That's it! Let's start to act when Guohao has deployed the sentry system, now let's take a look at the surrounding buildings to see if there is any situation, and those with sniper rifles will first look for important targets on the top floor, and shoot when they find xenomorph living corpses, especially howling corpses! Let's take some of the burden off the survivors here."

Zhou Zhiyuan said

Three months after the day of the calamity, humanity has finally taken the first step back into the area where it used to live!

Thank you again for the 5 recommendation votes cast by the book friend "b25 do you want", your support is a motivation for me, and I wish you all the best in life.

In fact, the technology that appears in this book is found in reality, I just integrate them into the plot, of course, as a novice, my technique and writing are not good enough, I hope you can give me more comments and advice, support me to write this book better! Sincere thanks to everyone who supports the genuine book.

(End of chapter)