Michael..I'm not sure where your destination is...perhaps you are an off shore worker
(that was my first thought) but maybe you're a soldier...anyway...airports can be sad or happy places depending on the circumstances...I taking a bet that you're on off shore worker....
This is one heartfelt poem that I can relate to on so many different levels. You have major talent in channeling your emotions and thats respectable.
Keep writing and job well done on this one.