Billy Preston wrote:
Why did he become a weekend warrior when
he could have become a full-time warrior?

Suppose you went to a recruiter and they said they didn't have any
pilot
slots available. You could join the USAF and take what they have.

You could go over to the Guard outfit and find that they have some
slots available, but you have to join the Guard first.

Suppose you join the Guard as enlisted, get selected for pilot
training, and receive a commission.

Presto, you're a pilot trainee, instead of a clerk in the payroll
office, or stuck in a rocket silo in Montana.

Would you rather be a pilot, or be a PFC burning **** in
Sihanoukville?

Well, other than the fact that there is no PFC in the Air Force... But the
rest of your argument pretty much stands.