VL bush-vet

[Max Nemtsov]

Dear colleagues,
it so happened that instead of translating V. I was after all 
commissioned to translate Vineland first, then V.
so please bear with me if i ask some dumb questions, will you?

Isaiah, in their greeting, wanted to slap and dap, having always =20
somehow believed that Zoyd had seen combat in Vietnam. Some of this =20
was bush-vet and jailyard moves Zoyd recognized, some was private =20
choreography he couldn't keep up with, though he tried, Isaiah =20
throughout humming Jimi Hendrix's "Purple Haze." "Hey, so, Mr. =20
Wheeler," Isaiah at last, "how you doing?"
Vineland, pg. 18

explain "bush-vet"?
with all my gratitude,
Mx