Are you claiming that this quote deals with Reserves and NOT A SHOT A BUSH ala dimo talking point (debunked as forged document)?.....zip
ClintonBeGone is correct. In the Individual Ready Reserve, your name is in the hat to go back to active duty when the Navy calls but you do not have to be a member of a drilling Reserve unit.
When the Navy is thinking about activating you, you get an order to get a physical. That's your official notification that Uncle Sam is thinking about getting you back into the Canoe Club.
If you fail the physical, you can't get recalled (and you might get discharged from the Reserves).
Thanks Poly!