If they pass -- they're off to boot camp.
If they flunk, they get another four weeks.
Repeat as required...
I was UNDERWEIGHT when I went in (had to get a waiver)..
We only had 3 minutes to eat each meal (so we crammed our face with rolls + the mandatory 8 ounces of water)...
I finished Boot weighing 40 lbs heavier. :^D