Squatting next to the magma pool where bubbles were constantly emerging, the three "astronauts" patiently used the metal instruments in their hands to perform some kind of measurement work.

These staff members affiliated with the underground base are collecting data on magma activities in this area and providing information to their superiors. Although the base once issued an alarm, they still came out to perform their tasks conscientiously and completely ignored the dangers they might encounter.

Because, this task is really important.

——For the next action, this data acquisition task is absolutely indispensable.

All three of them knew that their collection task was the key to the success of this operation.

“Be careful…”

A astronaut standing behind, while "watching" his teammates to conduct measurement work, looked around alertly and guarded against enemies that might appear at any time.

Since night vision and thermal imaging were not available, he could only observe the situation within the range of magma. It is now obvious that there is no enemy, but he still dare not take it lightly.

"Hurry up, prepare to evacuate." The astronaut in charge of guarding said in a low voice.

"It doesn't matter, the enemy cannot attack here, and even if Bigford falls, Marcus is there." The astronaut who is still using the instrument for measurement is not as nervous as his companion.

In his opinion, the defense outside the underground base can be described as "copper walls and iron walls". In addition to the nearly immortal Martian creature, there is also one of the senior figures in the underground base, Marcus, who came from where he came from.

With those two tough characters here, even if the enemy can get here by chance, he should be dying, so there is no need to care.

Of course, the enemy who invaded the underground base may also be a ruthless person who can kill two generals in a row. But even so...

The astronaut who was measuring shook his head and stared at the reading displayed on the metal box screen. It was not until the number was determined that he finally nodded with relief and used a radio to say to his teammate who was close to him: "The measurement is completed."

"Okay, you can retreat." The astronaut in charge of guarding nodded and turned around and walked behind the magma pond.

He was about to turn on the thermal imager inside the space suit helmet, but he saw a small fire suddenly lit up at a location two hundred meters away.

Bang!

The light machine gun bullets blasted through his space suit helmet, easily shattering the skull and stuck at the back of his head. The astronaut fell down without saying a word, and the other two next to him immediately reacted:

"Enemy attack!"

One of them pulled out the pulse pistol inserted into the holster and began to shoot at the position where the fire was on, while the astronaut carrying the equipment ran quickly in the opposite direction.

"Run quickly, I'll cover you, this time the information cannot be wasted!" The man who was shooting roared. As soon as he finished speaking, the bullets were bombed through his chest and fell to the ground weakly.

——Many people think that machine guns can only be used for fire suppression, but the reality is that this weapon is also very useful for precise shooting.

Many of the early large-caliber sniper rifles actually had scopes installed on heavy machine guns. If experienced soldiers were experienced, the accuracy of shooting using this weapon was also very high. In the 20th century, a sniper used the M2HB heavy machine gun equipped with scopes to achieve the world's furthest sniper record of 2,286 meters. This record was even maintained for 35 years and was not broken until 2002.

For Lin Chi, who has been using machine guns for a long time and his proficiency has increased to a very high level, it is naturally easier to kill the enemy with a light machine gun equipped with a sniper rifle scope at a distance of 200 meters!

Seeing that both companions were killed, the remaining astronaut had no time to feel sad, but just ran wildly in the box. His bloated body protected by the space suit was still swaying left and right, trying to avoid the sniper's bullets through the "devil's pace".

Unfortunately, he soon realized that his efforts were just futile...

Another gunshot was heard. The astronaut who had just run out of the high temperature range of the magma pool fell to the ground with a tilt. A large amount of blood was spurted out from the ankle hit by the bullet.

"Damn it."

While cursing, the astronaut tried to crawl away from this dangerous area. Even though he was disabled, he still dragged the metal box for measurement conscientiously, which was very disabled and strong.

His body began to lose strength due to severe pain and crawled less than ten meters away, and saw the gunman who had just shot, walking over quickly.

"The lowly criminal..."

As the figure in tribal protective suits expanded, the astronaut muttered to pull out his gun, and then was shot in his right hand with another shot. The fierce and violent pain that came again made him wail.

Lin Chi turned on the loudspeaker of the protective suit, put down the light machine gun in his hand, squatted beside the astronaut who couldn't get up, patted the still hot metal box, and asked:

"Tell me, what is this?"

"Criminal, I will not surrender!" The astronaut cursed loudly, pressing a button next to the helmet with his left hand that was still movable. The face under the mask was suddenly covered with green gas, and his body began to spasm wildly.

——This guy committed suicide with poisonous gas!

"You really have backbone..."

Looking at the twitching body of the astronaut who would rather die than surrender, Lin Chi bent down and lifted the hot metal box. There was no introduction to the item in his sight, but instead several question marks popped up.

Realizing that the puzzle here is not easy to answer, Lin Chi stuffed the box into his backpack and turned around and left without saying a word.

In order to obtain this box, he had to take the risk and shoot directly in a place that might be inside the underground base. Now, the enemy may have heard the gunshots and is on the way to arrive.

Although it was a pity that it was not possible to ask for information from the astronauts, it could only retreat now. When the brigade of the underground base arrived here, Lin Chi, who was still in an open space without shelter, would definitely become a target!

"Warning, discover the intruder."

Suddenly, repeated reminder sounds came from his headphones, plus the same sirens that were circulating in the ghosts. Hearing this sound, Lin Chi rushed to the direction of the three astronauts as fast as possible, and the tactical flashlight in his hand kept shaking, as dazzling as a lighthouse in the darkness.

He knew that he was currently in a desperate act and was extremely likely to be shot by the enemy, but now he could only take a gamble. After all,—

"Gambling is also one of the joys of life, my friend..."
Chapter completed!