Good for you! I think it's great when people follow their dreams. I didn't even think of the possible problems when going through security check points. I'm surprised they didn't do a more thorough search of you to make sure you're not smuggling anything up there.
If you do go through with it, post some before and after pics and let us know what interesting moments you encounter.
I am in the process of talking to a surgeon in San Diego who will do implants on males. I have wanted breasts all my life, have worn forms , rather large ones in public many times. As one person above said most people don't see a man with boobs even if you are standing in front of them. I wore size 56's about a d cup in the airport at O Hare for over 18 hours. (got stuck there) and only a few people noticed. One girl on the plane kept looking at me. She was not close enough but I am sure she would have asked if given the opportunity. Even got patted down during a security check. He was more embarrased than I was, and believe me there was an audience. So having breasts and people seeing them would not bother me most of the time. I would probably just hide them from some family members. The rest I really don't care about them or what they think. I want titties and I am working towards getting them. The more men who get breasts and show them in public openly will make it easier for all to follow!