Once a person is immersed in something, he feels that time flies extraordinarily.

While looking at the map and checking the information, while thinking wildly, Long Yun was unconsciously busy for more than an hour but did not gain anything; Looking at the blank sheet of paper, which had only a few records, he admitted that he really couldn't see the strategic value of the Soviet troop staging sites, mining sites, and industrial centers that dotted the heart of Central Asia.

Seriously, there are still many restrictions on such a thing as a strategic reconnaissance aircraft to spy on secrets on the ground; The "Blackbirds", who always came to reconnoiter in the second half of the night, used thermal imaging equipment or low-light equipment to take high-resolution photos of the area below the route during the Mach 3 Racing Voyage, and at the same time used airborne antennas to collect electromagnetic radiation information from Soviet radars and communication systems.

Of course, these reconnaissance methods cannot be said to be unadvanced, but even for such a sensitive target as a military assembly area, repeated incursions have already reminded the opponent, and in the middle of the night, what secrets can you expect to see?

With a hint of disappointment, Long Yun, who was a little tired after sitting for a long time, stood up straight and stretched, and walked back and forth in the room with light steps for a while, which was considered to be a temporary relaxation.

I only returned to my residence in the middle of the night last night to rest, and I was pulled in early this morning to do this, although Kirov's words were to let him familiarize himself with the situation first, and he could arrange the work freely, but the "Blackbird" piloted by the mysterious person always appeared in his mind, and the inexplicable intuition of "there must be some secret in this" has been driving him, of course, there has been no gain until now.

Reaching out to lift the blackout curtain slightly, Long Yun stood between the tall glass window and the curtain facing the atrium. Raise your hand and rub your temples with your thumb. The mind seems to have cleared up a little; As the image of the small data book page fades from my mind. Temporarily freed from the complexity of specific affairs, he finally began to think in a different way.

Needless to say, both the KGB and himself are well aware that the "Blackbirds" that have recently appeared in the skies of Central Asia have a very different mode of action and do not look like they are engaged in some kind of strategic reconnaissance.

So if you think about it from another angle, if you want to analyze the reconnaissance attempt of the "Blackbird", is it impossible to speculate according to common sense?

Long Yun's idea was. Since it was not an ordinary reconnaissance plane and was controlled by that mysterious fellow, he made a bold assumption for the time being: The "Blackbird" intruded into the airspace of the Soviet Union for the purpose of strategic reconnaissance at all -- or, in a normal sense, what the "Blackbird" was trying to spy on or look for was probably not the so-called important target that the general public thinks.

Thinking about it along this line of thought, Long Yun suddenly seemed to have a new idea.

Emerging from the curtain and turning to the map table, he sat down and took two sips of water from his enamel glass, but his eyes fell on the agent's flat-laid film and map.

Covered with large clips of film on both sides, the red lines representing the SR-71's track on the map are very dense, and the result of the layers of layers appears to be extremely disorganized; At this time, the agent was making a mark on the top blank film, yes. His thinking was very reasonable, looking for the key points near the intersection of a large number of tracks. Then judge whether it is the target of the "Blackbird" reconnaissance.

No, it shouldn't be done......

I don't know if it was an intuition in the dark, or a change of thought after searching for no results, Long Yun's eyes swept over the places where the tracks intersected one after another, and then he made a seemingly inconspicuous discovery.

These thin red lines, which represent the tracks of the "Blackbird", seem to be completely disorderly, but in fact, of course, there is a certain pattern: if any reconnaissance plane wants to spy on something, it needs to pass over the target several times to collect information, so the agent will first notice the intersection of all tracks.

On the large map in front of you, there are indeed many such intersections, and it is difficult to figure out what the "Blackbird" is spying on if you look at them one by one. But what Long Yun found was that all the red tracks intersected, and there were usually suspicious icons or numbers around them, and he had never expected that the Soviet Union would have so many important targets in Central Asia, except for one intersection

Around this intersection, Long Yun leaned over and looked at the map carefully, yes, there was nothing in this area on the map.

What symbols are nothing, that is, a white field?

As if receiving a crucial hint, Long Yun's gaze lingered for a long time on the blank area that was crossed by staggered tracks, and only after he confirmed it again and again did he realize that he should have grasped the key to the problem. Of course, it is not uncommon for the sparsely populated and desert-dense region of Soviet Central Asia to have large blank spaces, but when you combine track intersections and blank spaces, this area is unique at first glance.

The empty space in front of him is, in terms of position, northwest of the Baikonur cosmodrome, about 200 kilometers away from Baikonur in a straight line, and about 300 kilometers from Aralsk, where he had previously carried out his mission. As far as Long Yun knows, the Baikonur launch site is located in a sparsely populated semi-desert area, and the surrounding terrain should be similar......

Could it be a coincidence that there are many tracks in the empty white land?

Noticing the order in which the film was superimposed on the map, Long Yun immediately dismissed the idea. Right in front of his eyes, although there are not many tracks in the empty area of Tongguò, the time is almost always up-to-date, including the last flight of the SR-71, which came to an abrupt end because of his interception, and if you do a short extension, you will also pass over this area!

In the spacious and bright analysis room, Long Yun, who was standing in front of the huge map table, fell into a long thought, and repeatedly observed around this area, and the more he looked, the more he felt that there was something suspicious in it.

It is no accident that he can now see that the "Blackbird" has repeatedly passed through the white land: although the line of sight shows that the cunning "Blackbird" will penetrate deep into the heart of the Soviet Union with each route, passing many important targets, including Baikonur, Karaganda and even Omsk, the attempt to cover up is very obvious when the existing conclusions are taken again.

Still a little unsure of his discovery, Long Yun thought about it again and again before he completely confirmed this idea, this blank area was probably the real target of the "Blackbird"!

However, as this judgment was confirmed, a new question emerged, which also made Long Yun at the table fall into a new confusion.

Since the area in front of you is clearly blank, what can the "blackbird" spy on? (To be continued......)