David's ability to learn is extremely terrifying, thanks to his powerful spirit. Under his control, the three long-range sniper guns will fire every few seconds.
Shadow Waiter judged the position of the first-level Zerg in the air, and David manually entered the coordinates on the controller according to the observed position, which reduced the aiming time of each long-range sniper gun and increased the number of attacks.
Outside the city wall, as more and more poisonous shock beetles were killed, the green poisonous mist became thicker and thicker, almost reaching the level of affecting sight.
A part of the green poisonous mist even floated over the city wall, even in the No. 5 sniper control room where David was located, a faint green poisonous mist began to appear.
The protective military uniform on David automatically turned on the internal circulation mode, and the internal life support system provided the required oxygen.
The oxygen generation technology has already reached its peak, relying on the energy blocks on the protective military uniform, as long as the energy is not consumed, the oxygen will continue to be supplied.
So David didn't have to worry about the harm the green poisonous fog would do to him.
But the thicker and thicker poisonous fog affected the speed at which he found the first-level Zerg.
"The cleaning mode is starting!" Hearing the notification from the control room, in Shadow Waiter's field of vision, many small holes appeared on the city wall, and these small holes sprayed out patches of water mist.
The water mist merged with the poisonous mist, turning into green water and falling to the ground.
It seems that the city defense system already has a way to deal with the poisonous smog. Think about it, the Federation has been fighting the Zerg for thousands of years, and it has long been prepared against the Zerg's methods during this period.
The exhaust system in the control room also started to work, exhausting the poisonous fog from the room.
When David first came to participate in the city defense, he was still a little nervous, but now he has long since lost that feeling.
To be honest, city defense battles are safer here than those battles he experienced in the phantom.
Those powerful first-level Zerg were either cleared by heavy laser cannons, or blasted into pieces by Gauss cannons, and those who could escape were named and cleared by long-range sniper cannons.
The entire battle process is done by sitting in front of the display screen and using the controller in your hand.
When he received the call-up order, he didn't even have time to go home to get his weapons, but now he found that even if he took the second-level long sword and second-level spear, he had no chance to use them.
Besides, David also has a reputation for self-knowledge. Although he has the ability to master cold weapons at the level of a soldier, he does not have the exoskeleton armor of a soldier. He is the result of being crushed when he confronts the first-level Zerg head-on. .
"Warning, warning, long-range sniper guns No. 5, No. 6, and No. 7 are overheated and are cooling down. The cooling process will take 100 seconds!" Just after David attacked continuously for ten minutes, a row of hint.
Then all three of his long-range sniper guns lost control.
Shaking his head, David let go of the controller in his hand.
At this moment, Shadow Waiter saw the Zerg start to retreat, and quickly disappeared from sight.
"Is this the end?" David murmured to himself suspiciously.
However, the identity bracelet still shows recruitment, and he still has control over the three long-range sniper cannons. The attack of the Zerg should not end so easily.
At this time David received a video call request from his father Hans, and he chose to agree.
"David, where are you?" Hans' figure appeared on the identity bracelet, but he stopped after speaking halfway, because he saw the environment David was in.
As a veteran who has participated in many wars, he naturally knows where David is.
"Why are you in the sniper control room of the city defense?" Hans asked anxiously.
"Father, I was called here. It's safe here. Are you, Aunt Bertha, and little Edie safe?" David didn't say much about his situation, but asked instead.
"We're all fine, we've all been transferred to the shelter." Hans replied while checking David's situation through his own authority. As David's guardian, he has the right to inquire about all of David's information.
It's just that he didn't expect that David would be recruited.
Soon he saw the reason for the enlistment. He was specialized in sniping and had the potential to snipe soldiers.
This made him happy, because the reason why he was able to get the title of 'National Scholar' was because of his own sniper ability, which showed that his son had inherited his talent.
As for the call for war, if it is a melee soldier call, then the danger is still very high, but the sniper call is relatively much safer.
Besides, if even the sniper control room is threatened, then it means that the city cannot be defended, and it will not be safe in the city by then.
Thinking of this, Hans relaxed slightly.
"David, pay attention to safety. Do not attack at full capacity when using the long-range sniper guns. How many long-range sniper guns do you control now?" Hans reminded and asked very professionally.
"I'm in control of three long-range sniper guns now!" David also heard the pointing meaning in Hans' words, and quickly replied.
"The city defense is really crazy, let a new recruit like you control three long-range sniper guns!" Hans couldn't help complaining when he heard the result, and then he said: "The three long-range sniper guns must keep firing at least once every fifteen seconds." Do not increase the frequency, the alloy of the long-range sniper cannon cannot withstand continuous overclocking attacks, and you must also ensure that once the Zerg rushes to the city wall, there must be a long-range sniper cannon to protect your control room."
David was taken aback for a moment. He also understood the problem of overheating long-range sniper guns from the battle just now. Just think about the fact that in continuous battles, if they cannot be fired for a hundred seconds, it will definitely be a disaster.
But it never occurred to him to defend his control room with long-range sniper guns.
"Once the control room is breached by the Zerg, you can adjust the temperature of the protective clothing to zero and keep your body still. There is a certain chance to avoid the Zerg's attack on you." Hans continued.
This method is a way of pretending to be dead, making the Zerg think it is a corpse, so there is a certain chance that the corpse will not be destroyed.
Because when the city defenses are broken, there are fresh lives everywhere, and the Zerg has more and better targets.
Of course, this method is also despised by the army, but David is not a real soldier. The most important thing is that David is his son.
He gave everything for the Federation, including his body, including his family. He didn't want his son David to die in the war before he was an adult.
Even if he is a 'National Scholar', the selfishness in his heart still exists.
"Father, I know!" David replied in a deep voice, and then he said softly: "Father, if the city defenses are breached and you have no chance to evacuate, then bring Auntie and Edie to this address, I have prepared some means of leaving safely."
Along with the message was the location of his hideout.
"David, you've grown up!" Hans laughed loudly. He was a soldier crawling out of dead bodies. He didn't take such small things as Zerg attacks to heart, but David's concern moved him.
As for David's means of leaving safely, Hans didn't ask too much. Children always have their own secrets when they grow up.
"Father, I will explain to you when the war is over." David finally said before disconnecting the video call.
After finishing the call with Hans, David sat in the sniper control room No. 5 and felt the responsibility for the first time. Behind him were his father, his relatives, and his friends.
While thinking about it, another situation occurred outside the city.
On the ground 20 meters away from the city wall, larvae emerged from the ground one by one.
Within 20 meters outside the city wall, the ground is reinforced with special alloys, so if these larvae want to get close to the city wall, they must drill out of the ground from 20 meters away.
These larvae are not quite the same as the larvae that David has seen before. These larvae are no longer earth gray. Under the earth gray shell, the dark green blood makes the shell appear a strange color.
David's identity bracelet also received the name and introduction of this kind of larvae. Corrosion mutant larvae, special Zerg mutated from larvae, have no combat power, but after the body is broken, it will produce a strong corrosive liquid.
Although his three long-range sniper guns have been repaired, he saw in the aiming system that a warning prohibiting attack appeared on these mutated larvae.
So all he can do is watch these mutated larvae emerge from the soil one by one, and then approach the city wall.
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(end of this chapter)