I'll respond to that.
The skilled trades group in the federal public service is one of the groups that is older, on average, than the ones you see generally across the federal public service. In fact, we're looking at a really significant number of retirements in the next ten years, up to 50% of the existing group.
As you know, the skilled trades area is becoming a highly competitive area generally in the economy. All kinds of employers are having trouble hiring in that area. That's one of the reasons why I think John highlighted the idea, or support for the idea, of an apprenticeship program within the federal government--to attract, train, and develop the essential skilled trades workers who still exist.
There's a related issue here. You'll know that numbers in the skilled trades area have declined in the federal public service over the last 15 years or so. A considerable amount of what's happened there is that work that used to be done in-house is now being contracted out to private sector companies on a just-in-time basis.