I just bought a MacBook at a local shop for an incredible deal (it's the previous generation) for my girlfriend's sister. I'm bringing it with me next week when I fly to see her for thanksgiving. But I'm concerned about the box and airport security. Normally you have to take your laptop out before going through the security checkpoint. But since it's brand new, never opened, I don't want to open it before handing it over. Will that be a problem? Any tips or advice? Thank you in advance!