Navy Callsign + airplane I flew.
Callsign came from my college degree...and while I've flown lots of different airplanes, I am a Tomcat guy at the core...
And like others, it's my username on several fora...and if you see an aging Toyota 4 Runner in Virginia Beach, with a Naval Aviator license plate that says "Astro14"...give me (or my wife) a wave...