In 1968 Yarno had finish part of his corresponding work, he was alone and his friends were still working on their project. Yarno was laying on his bed, looking at the roof when he turned his head to his side looking at many books the N.A.S.A. gave him as a welcome gift. He never really had a chance to read more than two, as they gave him about 8 different books, they all had different subjects as organic chemistry, biology, arithmetic. There was a book with a green cover that had as a title '117 Elements and a little more'. Yarno took the book and started reviewing the pages not really reading them, he was just looking at the pictures. He stoped at a page that said 'Potassium chlorate'. He started reading this the history of this element finding out that in the past, people used to make many source of explosives with this white dust. He was intrigued as he always loved the fireworks, he loved the colors and the big 'Booom!'. There was small article with a soldier pasting what appeared to be a white mass with some cables on it. Then a small description that said: A U.S. marine corp setting a plastic explosive made out of potassium chlorate. Yarno jumped from his chair saying 'Ah What?! That looks like a lot of fun'. Yarno ran out of his book and went into the library looking for any explosives related book he could find. He found a book called '101 way on how to get yourself blown up.' He took it to his room and started looking for the plastical explosives part. As he was looking at the pages he found how to make black powder, he wrote down the instructions but he never really tried making black powder. He kept looking for the plastic explosive until he reached to page 93, there was a big tittle that said 'Plastic Explosives'. He took the book towards the experimentation field, ask for permission for making a new experiment and began making the plastic explosive. When he was finished, he linked two wires to a remote control, he carefully pasted the explosive behind a testing plastic door and ran behind the armored glass. He triggered the bomb and yelled of happiness as he saw how the door blew up in several peace. He liked this new thing so much that each time he had a chance (Not that he had many), he repeated the experiment.
Alright, I just added the part into the backstory, in case you do not want to look for it, I have pasted it up here.