Busts Of Tappers

Three years the radar missed his head,
good training truly paid,
then......was it something he had said
perhaps a secret raid?

In any case, tuition must
to be effective stay
not in a bucket set to bust
or stacks of fragrant hay.

IN is the key, and some possess
a huge amount of it,
that's why he's sitting in a mess
that some would label shit.

wombat
Not close. It's non military.

leafsailor
fun to read, but as of yet its a word puzzle ,give me one more clue,some how a sniper shot?