Almost subconsciously, Clark and Kevin stopped quarreling. Clark pulled Yang Jing to his depth, while Kevin raised the gun and half knelt on the ground in a very short time, pointing the dark muzzle outside steadily.

Several more gunshots sounded, and Clark and Kevin looked at each other and said, "No, the gunshot should come from the entrance of this cave. Thor and the others have encountered the enemy!"

Kevin lowered his head and started asking at the communicator, but there was no signal here. Deep in the belly of a mountain here, there would be no signal here.

"Damn it!" Kevin turned off the communicator and cursed in a low voice, "We need to support Thor and the others. Clark, take the boss with you to see if there is any other exit. Take the boss out of this place first, so that you can save someone from taking it. I'll go to the cave entrance to support Thor and the others."

Clark nodded, pulled Yang Jing and walked out, while Thor began to run quickly in the cave like an agile leopard. The gunshots coming were getting more and more intense. It was obvious that the people from outside had put a lot of pressure on Thor and the others.

When Kevin arrived at the entrance of the cave, he found that his three friends were under the cover of the rock wall in the cave hall with four forks, and tightly resisting the enemy who wanted to rush in outside.

Seeing Kevin running over with his waist, Sean said, "Boss, about fifteen minutes ago, a catastrophe armed helicopter and a hippo transport helicopter came outside. There were twelve people on the hippo, and the catastrophe had been hovering in the sky. Thor ordered Sean and I to retreat into the cave to defend on the spot. Outside, there was that catastrophe, and we had no ability to resist."

The hippo transport helicopter Sean mentioned is the Mi-17 medium transport helicopter, which was a medium transport helicopter developed and equipped by the former Soviet Union in the 1980s. The NATO code name of this helicopter is "Hippo".

"Who are they?" Kevin asked.

Sean and the others shook their heads. Thor suddenly raised his gun and shot outside, then said: "It seems that they are all Russians, but they have no signs on them, not like regular Russian soldiers. Judging from the fighting style, they seem to be mercenaries."

Kevin spat hatefully, "How did these guys find us?"

"I don't know either, but looking at their actions, they obviously know our location very well, because the hippo landed was where we landed just now!" Thor said very affirmatively.

"Shet! It seems that our news has been leaked, or there is an insider inside us!" Kevin said very surely, "Otherwise they wouldn't have grasped our tails so accurately. Damn, what's going on with the Blue Whale? Thor, did you contact the Blue Whale just now?"

Thor shook his head and said, "Sorry, Kevin, I have been trying to contact the Blue Whale just now, but I have never been able to contact the other side. According to my judgment, the Blue Whale is likely to be suppressed by electromagnetic pressure. We cannot contact them, and they cannot contact the outside world. These guys are prepared!"

A noisy Russian shouts sounded again at the entrance of the cave, and several shadowy figures appeared at the entrance of the cave.

Seeing this, Kevin and the others quickly picked up their guns and shot them out a few points. Not only did they successfully disperse the guys who were trying to attack the hole, but they also made one of them wail.

The other party seemed to have not expected Kevin's joining and injured one by one by these shots.

Defensive in such places is almost a rhythm of being unable to escape from ten thousand men. As long as there is enough ammunition, almost no one can break through here.

Kevin obviously knew this very well, "Be careful to save ammunition, we need to stick to it longer..."

As soon as he finished speaking, Mark, who had been monitoring the entrance of the hole, suddenly shouted shrillly - RPG...

Almost subconsciously, several people immediately fell to the ground. The next moment, an RPG rocket with a long flame hanging from behind rushed in from outside and hit the wall opposite the cave hall, causing a violent explosion.

In this nearly confined space, the explosion effect of an RPG rocket will be amplified to the limit. Not only will the lethality of the grenade fragment increase dramatically, but the same is true for the shock wave during its explosion.

The explosion of this RPG rocket caused almost catastrophic damage to Kevin and the others. Although several people staggered and staggered after a brief dizziness, blood was coming out from their ears, nostrils, and even the corners of their eyes.

The grenade fragment did not cause any damage to the four of them, but the shock wave almost killed them.

Seeing a figure flashing at the entrance of the cave, several people raised their guns and fired continuously without hesitation. As for whether they hit the enemy, they didn't know that their ears had temporarily lost their due function at this time.

After this round, Kevin knew that he could not defend here. The cave hall was less than twenty meters away from the entrance of the cave, and it was almost a straight line from the entrance of the cave. The opponent could use the RPG once and use the second time. But they could no longer withstand the second RPG attack.

Kevin Martin made a few gestures, and Thor and the other three immediately followed Kevin to retreat. In this case, it is most appropriate to withdraw from the hall and then ambush the fork in the edge of the fork.

At that position, the enemy's RPG cannot directly attack, and can also tightly guard the cave that enters the hall from outside.

Sure enough, after a few minutes of retreat, several sneaky figures appeared at the entrance of the cave hall. Kevin and the others attacked with guns. Two of the five people who tried to enter the cave hall immediately fell down, and the other three immediately shrank back.

Kevin made a gesture, and the four of them immediately retreated. Sure enough, as soon as they retreated to the next cave hall, a violent explosion sounded there. However, Kevin and the others had already withdrawn a long way, and this RPG attack did not have any impact on them.

As soon as the explosion ended, they immediately returned to the defensive location just now, staring at the entrance of the cave with guns in hand.

After several consecutive struggles, after throwing down four corpses, the people outside seemed to realize that such an attack would be of no effect, but they obviously had no good idea.

At this moment, Yang Jing and Clark touched Kevin and the others.

Seeing that Kevin and the other four had blood on their faces, Yang Jing was also startled and asked quickly: "What the hell is going on?"

Unfortunately, Kevin and the others couldn't hear Yang Jing's question. The first explosion just now had already broken all their eardrums. The mistake was to speak loudly in their eardrums, otherwise they wouldn't hear others' words clearly now. However, this type of traumatic rupture caused by the explosion, as long as you pay attention to protection, it can usually recover on its own after three or four weeks. If it cannot be restored, you need to go to the hospital for tympanic membrane repair surgery.

Although I couldn't hear what Yang Jing asked, the injury to the eardrum did not affect Kevin's speech.

"BOSS, there is a group of mercenaries outside, and we are not sure about the specific identity. I guess there are insiders among us so that they can catch our tails so accurately. And according to Thor's analysis, the reason why the Blue Whale cannot be contacted is because it is suppressed by electromagnetic force. In other words, the enemy is now divided into two groups to deal with us, one of which is on the Blue Whale, and the other group is here..."

Kevin quickly said everything that had just happened in the shortest words, and during this period he also repelled an enemy's attack.

Kevin's words made Yang Jing and Clark angry. It was obvious that there must be an insider among his group of people, otherwise the enemy would not be able to find himself accurately in an unmanned land like Siberia. Although it is not clear about the situation on the Blue Whale, given the current situation here, the Blue Whale must not be easy.

Yang Jing is not worried about anything else. What he is most worried about is the princess. If something happens to the princess, he will really go crazy!

At this moment, a sound from outside was expanded through the electric speaker and then transmitted in.

"Kevin Martin, my old guy, long time no see, I'm Kiryyangkov, do you still remember me?"

Kevin's voice was naturally unclear, but Clark's face changed after hearing it.

"BOSS, I think we're in big trouble this time." Clark didn't hide it, and directly said what he knew.

"This Kiryyangkov is the second-person of the Russian 'Bloody Bear Catch' mercenary group, nicknamed 'Wolf Tooth', and has been following the "Butterfight" Kowowski. The "Butterfight" Mercenary Group is a mercenary group active in the battlefields around the Middle East and Russia, with about 60 people, and is a very fierce mercenary group. If Kiryyangkov appears here, then the No. 1 person of the "Butterfight" Mercenary Group, there is a great possibility that the "Butterfight" mercenary group will appear on the Blue Whale. BOSS, we must find a way to break through as soon as possible. The Blue Whale needs support. If that guy Kowoski captures the Blue Whale, I can't imagine what that guy will do to Sophia and Chris."

When Yang Jing heard this, his heart suddenly sank. But before he could think of anything else, Kyryyangkov's voice sounded again.

"Kevin, my old friend, although we fought on the Syrian battlefield, I still admire you very much. So this time I would like to advise you to surrender as soon as possible. I guarantee your personal safety."

"Also, don't think that if you are hiding inside, I can't do anything to you. I just don't want to destroy the place. If you continue to anger me, don't blame me for blowing up the place completely! You should know that I have this ability."
Chapter completed!