Fix the incorrect or unnatural expressions

I always thank you for kind comments =)

I went to the airport early in the morning for my business trip with my boss. There were so many people in the airport. I barely went made it through the security and barely got on the plane on time. You know, there’s was something surprising. I got a phone call from my boss. But I was in the middle of security, . S so I couldn’t answer it. I called him back after the getting through (making it through) security. He said he was already on the plane!! I didn’t expect him to get on the plane. The airport was so crowded and confusing. I didn’t think he could get on the plane in advance.