"I think it'd be cooler if it identified you as Xenonaut Personnel. "Trust me, I'm a Xenonaut" or something less cliche"
I agree with the above - some kind of t-shirt you can role play in.
ex:
"Xeno Naut
Cleaning the planet since 1950"
or
Xenonaut Rookie
Proud to be fodder
or I'm fodder and a I like it