New rule is that if a cadet has an exceptional talent (see Caleb Campbell and Mike Viti if they make the NFL rosters), they are obligated to spend 2 years doing recruiting on the side of their job.
If they are still playing in the NFL after those two years, they have the option to buy-out their remaining 3 years of active duty by committing to 6 years of reserve service. Or they can go into active duty for 3 years if they have washed out.