I am retired USAF/ANG after a back injury finished off my world tour career. Left as a Master Sergeant, C-130 Loadmaster Instructor, I was also a journeymen mechanic on RF-4C aircraft until the USAF decided to retire the old Phantom aircraft.
Findagrave.com has been a great tool for family history research. I have connected with cousins I would have never known of.
I started researching family history because my father left when I was three, and information was hit and miss. It is amazing to find out your father was an only child, and your Grandfather was the youngest of 12.
As I research and learn, I feel more connected to my roots, I know where I came from, and who I came from. Brick walls are just an excuse to dig in more.. but they do slow you down.