It means that if you attend SFAS and are selected for training you have 3 years to attend the SFQC. After 3 years you will be required to attend SFAS again if you want to attend the SFQC. Once you graduate the SFQC you don't have to attend SFAS again.
If there is a break in service, you would attend something dissimilar to SFAS involving a PT test, 12-mile ruck, and an interview with some SGM's among other things. Personally speaking I might would rather attend SFAS again.
I think it should be longer than 3 years. Especially in wartime. Suppose you're a joe in the 82nd and attend SFAS in April/May. You get selected but you can't make the fall SFQC class (Sep/Oct) due to a deployment in the summer. While you're in country your one year gets extended to a total of 18 months in theater due to whatever. So the clock is at 18-20 months. You have about 18 months to go though the pipeline. Now lets say this joe gets though some portion of the Q (regardless of mos) and somehow gets released for Administriative/UCMJ reasons/personal reasons. If he's in a longer MOS like 18D, he's screwed and has to go to SFAS again.
Does the memo you have state if the SFQC wasn't completed prior to the 36 month deadline SF candidates reapplying to the SFQC (after having been relieved for x, y, or z) would be required to attend SFAS again prior to receiving a class start date? If so can you CC me on it. I saw a similar memo today in the SWTG(A) NG Liaison's office but it didn't make mention of guys reapplying after having completed a portion of the SFQC.
Also I agree with you on an extension for those guys who are deployed. There seems to be an issue with O's due to year group and deployment schedules as well.
Once you are Selected orders are cut sending you to the SFQC, however with deployments and such guys are getting caught in deployments prior to coming down on PCS orders to the SFQC. Also, you can decide not to attend the SFQC after having been Selected. Few do it, but it does happen.
It depends on the length of the break in service, the MOS, and the rank held at the time.
There is a laundry list of things that will need to be done to come back to active duty after a break in service. I know when I left Bragg they were discussing changing the timeline for reentry but dont know what ever came of it...
The best way to find the real skinny on if it has changed would be to call one of the SF recruiters.