Don't fret, the Navy has all PCS changes and orders for re-rating on hold until October, so they are involuntarily separating those folks at DTP that have a crow now, and are being re-rated, and also not sub-vols.
This is just my analysis of the trend I see here.
Things may change to include people who have not put in a 1306 yet for changing schools.
Money is tight and everyone is feeling it, from the top down.
A 3.02 is fine, don't worry or you'll make the GPA drop.
Keep your head looking forward, on school related matters, and use the NDI's and quite study.
Goofing off in classrooms after 1600 is out of control, so time spent at A-School and Power School-- to a slightly less extent-- is almost wasted.
Your Chief is just trying to prepare you for possibilities, not actualities.
Good luck and best regards.