Forty or fifty kilometers from Hoover Dam, sun Cheng, the forerunner and the attack had to stop.

    "We''re in trouble!"

    He took back a group of advanced insect detectors released from the outside, and his face became serious, "there have been dense human patrols since then..."

    He projected a temporary stronghold composed of four US National Guard personnel carriers two kilometers away to show the attack. The reconnaissance device released by sun chengwai found that the closer it was to Hoover Dam, the more American strongholds.

    Although this force is nothing to the trio, the newly born pioneers can easily destroy it.

    However, sun Cheng is afraid of the significance behind this. The Yankees have once again increased the defense strength of the seventh district.

    The attacker glanced at the image he projected and turned his head. There were no more emotional fluctuations on his face, but the flash in his eyes showed everything.

    Although he is a rare rational faction among Decepticons, in the final analysis, he is as arrogant as most Decepticons. Now he has new weapons in hand. Naturally, he is less afraid and more rebellious.

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

    As for the seventh district, he has paid much attention to it since he determined that the [ignition source] is here.

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

    According to the information he collected during this period, this is the third time that the US government has strengthened the defense of zone 7 since he invaded zone 7 last time.

    The first strengthening was just a few days after he invaded zone 7. Under the banner of "intelligence agencies intercepted information and terrorists wanted to blow up the Hoover Dam", the U.S. government sent an infantry battalion and an artillery battalion near Hoover''s defeat, through the Yankees'' own spy satellite, Sun Cheng even found several groups of mim-104 air defense missiles arranged nearby.

    A week later, the US Department of defense transferred the 119th attack helicopter regiment of the National Guard originally stationed in Trinidad to Las Vegas, only dozens of kilometers away from the Hoover Dam.

    This time, not only an independent brigade of the National Guard was transferred, but Las Vegas was stationed in the 30th space wing of the US air force again.

    Sun Cheng thought for a moment. He hasn''t made any moves recently.

    So it''s not an attack, it''s only possible that it''s dizziness that hasn''t contacted him for a long time, or there''s some big news on Starscream, and the result is to scare the snake.

    He scolded secretly in his heart. Seeing that the security in the seventh district is tight recently, he is cautious. If he comes alone, he must turn around and leave. After a while, the security here is not so strict before sneaking in.

    however!

    After watching the attack, sun Cheng quickly gave up the idea.

    It''s obviously not been a year or two since he attempted to attack the [fire source]. He has waited so long. This arrogant guy even paid himself. If he doesn''t see the [fire source] today, I wonder what the result will be!

    At present, he can only suppress a little uneasiness and take the initiative to say: "according to the investigation data fed back before, I designed a fairly safe route, which can let us get close to the base about 15 kilometers. There is no way to move forward, so we can only attack!"

    "It doesn''t take so much trouble. How many garrison forces are there nearby? Feed back the data to me!"

    The attack gave him a dull look and directly interrupted his arrangement.

    "Well, all right!"

    Sun Cheng couldn''t control him. He frowned and didn''t say much. He raised his head and pointed in the air, and then transmitted all the American defense captured by the spy to him.

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

    There was a flash in the attack''s eyes. After digesting all the data, he bowed his head and asked him.

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

    Before he finished, he saw that after the attack suddenly changed back to the form of super heavy truck, the double barrel railgun on his back was set up high.

    "Can you get it?!" he was so happy that he nodded and agreed without waiting for the attack answer. "I know. I''ll pass the data to you right away..."

    Sun Cheng noticed the changes in Las Vegas, a city near the seventh district, after being captured by a spy satellite with its own back door, so he had the coordinates of the 119 attack helicopter regiment and the temporary residence of the 30th aviation wing.

    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 barrel railgun on his back began to charge and soon lit a strong blue light.

    The whole energy storage process lasted about five or six seconds. After the energy storage, with a loud noise, the ground on the empty space where the attack was located fell more than ten centimeters out of thin air, which shows the strength of ballistic recoil.

    "Boom!"

    After a blast, with the slight adjustment of the muzzle and the accumulation of force, the attack went on again, and then adjusted and stored again. After seven or eight rounds of bombardment, Sun Chengcai saw him stop and did not see him returning to human form. He ordered, "OK, let''s go."

    Although he doubted that his shots could really solve the threat of the U.S. Air Force in Las Vegas, sun Cheng was hard to ask. He looked at the hole pressed out by the huge recoil of the trajectory under the attack. He immediately nodded with the forerunner, immediately changed back to the form of death god UAV and flew to the sky.

    "I''ll clear the obstacles..."

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

    After flying over the stronghold at his speed, he suddenly received a group of ground communication warnings trying to access, "unidentified aircraft, you are now in the military controlled airspace, please indicate your identity and fly eastward to leave the military controlled airspace... Repeat, please indicate your identity and fly eastward to leave the military controlled airspace..."

    After the core quickly captured the communication from the direction of Hoover Dam dozens of kilometers away, sun Cheng quickly informed the attack, "attack your excellency, there are ground surveillance radars at the coordinates XXXX, and there are several groups of Patriot air defense missiles nearby. Please be sure to destroy..."

    Soon, he saw the faint thunder in the sky, and several shells containing terrorist energy sped towards his newly reported coordinates at a speed that could not be captured by the naked eye.

    With the cooperation of the attack and without the threat, sun Cheng made up his mind, quickly locked the several vehicles on the ground that had obviously found his troop carriers and the guard soldiers, and launched a dive point fire!

    "Da Da..."

    For a moment, the sound of killing sounded.