Pls, Help me with the correction!.

Yesterday, I went to the airport early, maybe 5 hours before my flight. I was very tired after long hours of work that I had had in that city. I remember that I sat down in a chair and saw a strange man, he had been sitting in front of me and he had been speaking by/on his cell phone for a few minutes, when suddenly, he stood up and he went to the toilet. In a couple of minutes, two security personnel came to the boarding gate with suspiciously attitude, as if they were looking for someone, they spoke to each other and then left the area. The strange man, came back from the restroom and returned to lie on the chairs as he was very tired too. I had been nervous about the situation, I felt butterflies in my stomach, I thought he was a gangster or something like that.
Two hours later, people started to come, and a lot of them are looking at this man, and also, started to talk to each other about him. When all of a sudden, a couple of guys approached him and asked him, if they could take a picture with him, others, asked for a autograph, and I didn't know what happen, Who is that man? all during the flight I was thinking about him. When I arrived in my country I saw a big banner that said: Welcome Vicentico!...oh my god!! I had been alone with Vicentico for hours and I didn´t get a photo or autograph.