The firefighting helicopter had finally arrived, and the bucket hanging underneath had been replaced by a blue bin with a blurred non-recyclable sign painted on it, dirty, probably filled with garbage just a few minutes ago.

Now, the inside has been replaced with dry ice, and a thick white fog is rising outward, and if it can fall to the ground, it should have a good stage effect.

The two heavy military jeeps also appeared—they might have been following behind, but they were far away, and the machine gunners were tasked with separating the lava men from the ground in the simplest and most brutal way possible.

"All in place. Sun An gasped and used his mobile phone to direct the action over there.

The gunship hovered over the lava man's head, the firefighter flew relatively close to the ground above the side, and the two jeeps were parked five hundred meters away, which was too far for the lava to shake off, and the bullets from the heavy machine guns could hit it.

Sun An hid under the rocks on the side of the road, between him and the jeep, the lava man shot over there, the bullets would definitely fly here, if he didn't dodge, he might die earlier than the lava man.

"It's all set. The voice of the co-pilot of the firefighting helicopter could be heard that he was a little nervous, although he was not the one who piloted the helicopter and controlled the garbage bin, he was the most idle person on the helicopter, so he was responsible for contacting Sun An.

"Pour, don't pour the light at once, pour down a little first, block his vision with mist, and then descend a little, you can pour more accurately. Sun An looked up at the sky, when chasing him, the lava man did not throw the molten iron because he did not replenish it, and now there is still a lot of inventory, the trick of throwing the molten iron is still very powerful, and the helicopter sticks to a point and the problem falls down, and it must not be sloppy.

The hatch cover of the attack helicopter is usually closed, this one is just an ordinary armed helicopter, the appearance is not much different from an ordinary helicopter, but some pendants are added, so there is also the possibility of operating the liquid nitrogen tank, four iron chains are hung with the liquid nitrogen tank, one is connected to the nose, it is fixed, two extend into the open side door, the soldiers in the cabin may control the two iron chains, and there is a pressure handle connected to the liquid nitrogen tank, the inside of the storage tank is pressurized, there is a metal hose connected to the top of the tank, as long as the pressure handle is pressed, the liquid nitrogen can flow out of the hose, which is very similar to a fire extinguisher, but there is not so much pressure。

The soldier sitting in the machine gun pulled the iron chain connecting the handle, and liquid nitrogen was sprayed out of the mouth of the pipe, and the boiling point of nitrogen was minus 195.79 degrees Celsius, so when it was sprayed out, it was boiling, and it quickly oxidized, and the white mist flowed down like a waterfall, and the scene was very spectacular.

"Uh...... Wouldn't this flow be too small?" Sun An was more concerned about the metal hose that immediately became hoarfrosted, compared to the body shape of the lava man, the flow of liquid nitrogen was pitifully small, which was equivalent to wanting to use a soak of urine to extinguish the forest fire, at room temperature, the liquid nitrogen would soon be gone, according to this drenching method, a bucket would be completely drenched, and the lava man would only feel like a breeze, right?

The co-pilot of "uh...... was also surprised, they and the helicopter gunship did not act together, and they did not expect this to be the case.

This is actually quite easy to understand, the temperature of liquid nitrogen is very low, and direct contact for a short time is no problem, because when the liquid comes into contact with an object far beyond its boiling point, the surface of the liquid will produce a layer of vapor with thermal insulation, which slows down the boiling rate, which is the "Leidenfrost-Phenomenon", but long-term contact is not possible, it will cause frostbite or burns, and it is not only safe to take liquid nitrogen with this slow flow method, but also to avoid liquid nitrogen vaporization to the greatest extent, resulting in waste.

The temperature of the lava man is extremely high, and if you are drenched like this, the liquid nitrogen will be vaporized before it reaches the ground, and the only effect is to reduce the temperature and oxygen content of the surrounding air for a very short time.

"Throw it down, and the Heavy is ready to blow the barrel up. Sun An immediately said that if he didn't do this, the liquid nitrogen would be completely useless.

"Wait, I'll pour dry ice first, that's better. After the co-pilot finished speaking, the fire helicopter flew towards the location of the lava man, the dry ice in the garbage bin was originally used to cool the garbage bin, and now it seems that it would be better to lower the temperature first.

Overall, the plan looks viable, but it's still a bit nonsense.

The garbage bin is connected to the firefighting helicopter with five iron chains, four of which have four corners, and one that is connected to the bottom, and the chains at the front two corners are placed down, and the bottom one is tightened to make the opening of the garbage bin face forward, and the lava man can be pocketed in, and there is no problem in pouring out the dry ice inside.

Sun An could only watch nervously, he couldn't do anything, he could only look at it this way, the faster the two helicopters moved, the better, so that he could give him a chance to start over.

Large chunks of dry ice fell and slammed into the ground, the temperature in the vicinity was still high, and the white mist poured out like an explosion, and at the same time, a large amount of molten iron was thrown out of the white mist.

The lava man is not stupid, he saw Sun An's plan at a glance, and knew that the most important thing in this plan was the garbage can, without garbage, even if he was frozen and scattered, he would be able to stand up again sooner or later, so after the gunship descended, he did not attack, but waited, and waited for the fire helicopter to approach before starting to attack.

All the absorbed molten iron was thrown out, and the target could not be seen, and it was a range attack, and it was just thrown into the sky anyway, like a fountain.

If it weren't for the fact that there was a dustbin down there, the firefighting helicopter would have been shot down.

The dry ice was not finished, and after the molten iron was thrown up, the white mist inside also exploded, forming a larger waterfall, and the helicopter immediately rose, and the temperature of the molten iron also quickly cooled down and stuck to the garbage bin.

Sun An breathed a sigh of relief and shouted into his mobile phone: "Don't rise too high, lest you have too late to come down and the liquid nitrogen attack begins!"

The gunship descended and loosened the chains attached to the liquid nitrogen tank, which fell down with the chains and smashed into the dry ice that had not yet been fully vaporized.

"Shoot!" Sun An shouted in a louder voice, as if he wanted to hear the machine gunner directly.

It was not the jeep that fired first, but the soldiers on the helicopter gunships, who did not have to control the canister, freeing their hands, although the cannon could not shoot vertically downward, but the gun in their hand could.

Shooting vertically downwards is better than shooting horizontally, so that the liquid nitrogen tank will not be knocked away, and when the bullet penetrates the wall of the tank, the liquid in the tank will burst out, and it will be sprinkled in all directions.

"Well done! Shoot together! The fire helicopter is ready to shovel people!" Sun An exclaimed excitedly, really like an officer who has won a battle.

Two vehicle-mounted heavy machine guns began to fire, and on such a highway where no one and no cars were there, they were more confident to shoot in.

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