The last time I was in the training building, I saw a whole class full of newhires, one wearing a spiffy conductor's vest. All faces were beaming. I would expect an Indoc class to be scheduled based upon future unfilled training dates reserved for new hires.
Congratulations on getting to the position you now find yourself. My best advice to you is to be the first one to Memphis after that phone call comes. Don't be out of the country doing your annual tour as the squadron tactics officer, wondering if it would be OK to be day late. You've come a long way, don't screw it up now.