The entire time I was at my NROTC unit (UCLA), the CO of the unit would call the mid in his office to let him or her know just what they got. I was spring grad, so part of the fall/winter selection process. The day we found out, our CO is on leave and right before one of those NROTC classes, our XO walks in and just starts reading off names and selection. No warning, no get ready, just bam.........Aguilar 1390, Foster 1150, Marlar 1390, etc and walks out. I think 5 or 6 of us wanted aviation and only two of us got it so there were at least two very happy campers.