I participated in the Council for Excellence in Govt Fellows program. You need your agency to support you b/c there is a cost to the training. I think its around $10K plus the cost of travel. If you live in the DC area, most of the trainings are in DC so you would only have to pay for travel to 2-3 of the 7 trainings they hold for the year. For those outside of DC, you would have to pay for travel for the 7 trainings. I found the Fellows program to be really beneficial. I wish they would offer it to GS-12s vs GS 14-15s b/c I feel you can learn the right ways to lead when you have it at a lower level vs possibly having to "teach an old dog new tricks".