Los Angeles TU declared a state of emergency tonight, everyone canceled their vacations, and employees on rotation were recalled. The data was very large and complicated, and everyone was divided into four groups to screen thousands of collected data.
Time passed by minute by minute, and everyone stayed up all night.
The simplest method is to compare the images. It is unlikely that the criminal will continue to stay at the scene after committing the crime, so TU immediately found the people who left during the premiere.
There are 7 in total.
Then TU checked the surveillance when entering the premiere. After comparison, it was found that two of the seven people were carrying backpacks when they entered, but left empty-handed. Among them was the Asian.
.
The other person was a Caucasian, who looked like an Eastern European, but he couldn't be sure because he was wearing a toad mirror the whole time. This in itself is very unreasonable, considering that the premiere was at night and in a mall.
, who would still wear sunglasses in that situation.
The two men were quickly identified as suspects, especially the Caucasian man because the style of his backpack was exactly the same as the backpack where the dumb bomb was located.
Of course, Tu did not let go of the remaining five people. After their identities were found out, commandos broke in the door that night, grabbed them from their warm beds, and took them back for repeated interrogation.
After some interrogation, it was initially determined that there should be no problem with these five people.
Polygraph tests showed that their responses were normal, and torture experts found nothing out of the ordinary during the interrogation process.
Moreover, these five people all had legitimate professions, and their reasons for leaving were also very reasonable. When they were arrested, these five people were not prepared in any way. One of them was even found in a small hotel in the red light district.
Everyone checked almost all the videos, but still could not find any frontal photos of the two people. Obviously, the other party had been carefully prepared in advance and had done a good job in counter-reconnaissance.
At this point, Owen's previous speculation has basically been confirmed, and the Asian man is a strong suspect.
The bomb disposal team arrived and they brought the latest analysis results.
Chloe and Owen were called by Tony to the office upstairs, which used to be Jack Bauer's and now belongs to Tony.
"This is Steve Irwin, the head of the field team. He has been out for special training before. He just came back recently. This should be the first time you meet. This is Nathan Schofield from the bomb disposal team."
Tony first introduced the two parties. The bomb disposal team was established by Owen during his time as a SEAL, and the two parties did not know each other.
Owen and Nathan nodded to each other as a greeting, and Tony continued: "Okay, now we can talk about it, what clues were found from the bomb?"
Nathan frowned: "The opponent used a type of bomb called TATP this time. Its scientific name is tripacetone triperoxide, commonly known as entropy explosive. This is a new type of bomb. You may not be familiar with it, but last year's
This type of explosive was used in the London train station bombing, and it was also used in the Istanbul airport bombing."
Tony and the three of them looked at each other. This was indeed the first time they had heard of this kind of explosive. There were two types of explosives used by terrorists in previous terrorist attacks.
The more awesome ones use military explosives, TNT, RDX and the like, but these are strictly controlled substances and may not be accessible to ordinary people.
Therefore, most of the time terrorists choose explosives, which are common engineering explosives, nitroglycerin, various ammonium nitrate explosives or homemade ammonium oil explosives, or emulsion explosives.
And the sources are even more diverse, some are stolen, some are simply homemade, and if you don’t have the connections, choose the black market.
"What are the specific characteristics?"
Nathan adjusted his glasses: "The reason why this explosive is a new type of explosive is that it is different from traditional explosives in the conventional sense. It is a sensitive explosive with special properties.
Traditional explosives burn and decompose rapidly in a very short period of time, producing a large amount of heat and gas, thereby causing an explosion. But TatP does not produce any flame when it explodes. On the contrary, it only requires a small amount of energy to trigger the explosive.
Explosion. And this process is not an oxidation reaction but a decomposition process.
During this process, triperoxide molecules release acetone, causing the connected oxygen atoms to spread out, forming oxygen and ozone. The energy released in this process is enough to cause a chemical reaction to occur with another molecule, maintaining the reaction's stability.
Occurs continuously.
One molecule of triperoxide can produce four gas molecules, which is why triperoxide can explode. In less than a second, only a few hundred grams of triperoxide can produce hundreds of
Thousand liters of gas.”
Nathan kept talking, and he didn't react until he stopped and saw the confused expressions of the three people opposite him: "Sorry, my occupational disease has occurred again. Well, let's put it this way, you all know about airbags, right?
"
After listening for a long time, they finally heard a familiar term, and the three of them nodded hurriedly.
"The airbag is filled with a small amount of azide. Azide is a type of TATP. When it undergoes a chemical decomposition reaction, it will generate a large amount of nitrogen, but only a small amount of heat. Because it is very safe, people use it
This property makes it useful in airbags in cars.
You can think of the tatp in the airbag as one part, and this bomb is hundreds of tatp put together, and the energy generated is naturally much more powerful than the airbag..."
After hearing the example of airbags, the three finally understood. However, Owen still had a question. He raised his hand and asked: "I'm curious. You said this explosive was the culprit of the Istanbul airport bombing. How did it come about?"
Passed the security check?”
Irving's question has nothing to do with today's content and is purely out of curiosity. If it were a bombing at a London train station, it would be okay, because there is no security check at the train station, and it is very easy to bring a bomb inside.
But the airport is different. It has a complete security inspection system. Unless you bribe internal personnel, ordinary explosives will not pass the security inspection at all. What's more, in addition to machine inspection, there are also explosion-proof dogs, and the dogs' noses are not barking for nothing.
"Bingo, you are right, but the answer is very simple. Because the principle of this kind of explosive is different from that of ordinary explosives, there is no way to detect it..."
Nathan's answer almost made everyone's eyes pop out. There are actually explosives in the world that cannot be detected by security? Tony felt that he needed to write a report to Jack immediately and ask him to report this matter. All security equipment must have the right
The identification function of this explosive, otherwise it will be a disaster for the entire world.
"But you just said that TATP is a sensitive explosive. How do terrorists ensure that it will not explode while walking..."
This time the question was from Tony.
Nathan snapped his fingers: "That's why I came here this time - that dumb bomb. As I said just now, TATP is a sensitive explosive that only needs a little heat to detonate, so a little friction
All of them may cause explosions. But this time the opponents are definitely experts. They use a specific passivating agent to reduce the sensitivity of the explosives, so they can be safely carried into the venue in a backpack."
"The most interesting thing is that the person who made the bomb seemed to have done it on purpose. The reason why the dumb bomb did not explode was because its use of passivating agent exceeded the standard by only 500%, and its detonation device was broken.
.”
Everyone looked at each other, and Chloe asked hesitantly: "Are you saying that the reason why the bomb didn't explode was because the person who made the bomb did it on purpose?"
"Yes, at least I think it is very likely. The bomb maker is a master. From the explosive composition ratio, installation and detonation device, it can be seen that the other party must be familiar with this field. It is impossible for such a person to commit such a low-level crime
mistake."
Everyone looked at each other again. This information was very important and might be the key to solving the case.