Forty or fifty kilometers away from the Hoover Dam, Sun Cheng, the Precursors, and the attack had to be stopped.

"We're in trouble!"

Retracting a set of advanced insect detectors that had been released, his face couldn't help but become serious, "There have been dense human patrols since here......

He projected a makeshift stronghold of four U.S. National Guard personnel carriers two kilometers away to show the attack, and Sun Chengwai's scouts found that the closer they got to the Hoover Dam, the more U.S. strongholds they had.

Although this amount of strength is nothing to the trio, even the newly born Precursors can easily destroy it.

However, what Sun Cheng was afraid of was the meaning behind this, and the Yankees once again increased the defense force of the seventh district.

The attacker glanced at the image he projected and turned his head away, his face showing no more mood swings, just a twinkle in his eyes that said it all.

Although he is a rare rational faction among the Decepticons, in the final analysis, he is still as arrogant as most Decepticons, and now that he has a new weapon in hand, he is naturally a little less afraid and more rebellious.

Sun Cheng frowned slightly, but didn't say anything more.

Speaking of the seventh district, he has not paid much attention to it since he determined that the [Tinder Source] is here.

Although he did not invade and spy again, Sun Cheng took the opportunity to leave a back door in the ground console of a military satellite, and paid attention to the dynamics here almost every day.

According to the intelligence he has gathered during this time, this is the third time that the U.S. government has strengthened the garrison of Seventh District since the last time he invaded Seventh District.

The first reinforcement was just a few days after he invaded the Seventh District, and the U.S. government, under the banner of 'the intelligence agencies intercepted the tip, there are terrorists who want to bomb the Hoover Dam', sent an additional infantry battalion and an artillery battalion near the Hoover Dam with great fanfare, and through the Yankees' own spy satellites, Sun Cheng even found several groups of MIM-104 anti-aircraft missiles deployed nearby.

A week later, the U.S. Department of Defense relocated the 119th National Guard Attack Helicopter Regiment, which was originally stationed in Trinidad, to Las Vegas, just a few dozen kilometers away from the Hoover Dam.

This time, not only was an independent brigade of the National Guard transferred, but Las Vegas was once again stationed in the 30th Space Wing of the US Air Force.

Sun Cheng thought about it, and he hadn't made any moves recently.

Then it's not an attack, it's just that he can't be contacted for a long time, or maybe the red spider has made some big news, and the result is a surprise.

He cursed secretly in his heart, seeing that the seventh district has been heavily guarded recently, and if he came alone, he would definitely turn around and leave after a while, and then sneak in.

But!

Looking at the attack, Sun Cheng quickly dispelled this thought.

The attack plot [Tinder Source] is obviously not a year or two, he has waited for so long, this arrogant guy has even given himself a reward, if he doesn't show him the [Tinder Source] today, I want to know what the result will be!

At the moment, he could only suppress a little uneasiness, and took the initiative to say: "According to the reconnaissance data fed back before, I have designed a fairly safe route, which can allow us to get close to the base for about fifteen kilometers. There's no way to go any further, but to attack!"

"Don't need to be so troublesome, how many garrisons are nearby, feed back the data to me!"

The attack gave him a bland glance and directly interrupted his arrangement.

"Uh, okay!"

Sun Cheng couldn't control him, frowned and didn't say anything, raised his head and pointed at his head, and transmitted all the U.S. military defenses captured by the scout to him.

"The most troublesome thing is human air power from 100 kilometers away...... Do you have more precise coordinates there? ”

There was a twinkle in the attack's eyes, and after quickly digesting all the data, he looked down and asked him.

Sun Cheng nodded, "Yes, yes, but it's so far ......away."

Before he could finish his sentence, he saw that the double-barreled railgun on his back was erected high after the attack suddenly changed back to the form of a super-heavy truck.

"Can you hit it?!" He was overjoyed, and without waiting for the attack to answer, he nodded and agreed, "I know, I'll pass the data to you right away......"

After capturing the changes in Las Vegas, a city near the 7th District, through a spy satellite that had placed the back door by himself, Sun Cheng paid attention to it, so he had the coordinates of the temporary station of the 119th Attack Helicopter Regiment and the 30th Air Wing stationed later.

Soon after transmitting the data to the attack, he and the forerunner saw that after the attack adjusted its position for a while, the double-barreled railgun on its back began to charge, and soon lit up with a strong blue light.

The entire energy storage process lasted about five or six seconds, and after the energy storage was finished, with a loud bang, the ground above the open space where the attack was located fell out of thin air by about ten centimeters, which shows the strength of the ballistic recoil.

"Boom!"

After a cannon was fired, with the slight adjustment and accumulation of the muzzle of the cannon, the attack was fired out again, and then adjusted and recharged, and after seven or eight cannons were fired in a row, Sun Cheng saw him stop, and he didn't see him change back into human form, so he ordered: "Okay, let's go......"

Although he was very suspicious that his few guns could really solve the threat of the U.S. Air Force on the other side of Las Vegas, Sun Cheng didn't want to ask, and looked at the crater under the attack that was pressed by the huge recoil of the ballistics, and he immediately nodded to the forerunner, and immediately took the lead in transforming back into the form of the Reaper drone and flying into the sky.

"I'm here to remove obstacles ...... way forward"

After Sun Cheng left a word, he flew towards the nearest temporary stronghold of the National Guard.

It didn't take long for him to fly over the stronghold at his speed, and he suddenly received a set of ground communication warnings trying to get in, "Unidentified aircraft, you are now in military-controlled airspace, please indicate your identity and fly east to leave military-controlled airspace...... Again, please identify yourself and fly east out of military-controlled airspace......"

After the core quickly captured the communication coming from the direction of the Hoover Dam dozens of kilometers away, Sun Cheng hurriedly notified the attack, "Attacker, there is a ground surveillance radar at coordinates xxxx, xxxx, and there are several groups of Patriot anti-aircraft missiles nearby, please be sure to destroy ......"

Soon, he saw the faint sound of thunder in the sky, and several cannonballs containing terrifying energy were speeding towards his newly reported coordinates at a speed that could not be caught by the naked eye.

With the cooperation of the attack, Sun Cheng made up his mind after there was no threat, and quickly locked on the few personnel carriers and guards on the ground who had obviously discovered him, and launched a dive shot!

"Da Da Da ......"

Suddenly, the sound of killing sounded.