Just some clarification.

Back 2 or 3 years ago, Envoy flows were 25+ years in some cases.

End of 2016 was about the end of the "824s". They flowed at about 16 years.

Currently the "Protected Pilots" group are flowing. As of a couple of months ago pilots that flowed were about 12 years.

It is forecasted at the end of the "Protected Pilots" the end of 2019, pilots flowing will be about 7 years.

Why the rapid change?

After 9/11/2001 the music stopped. There were very few Envoy hires between then and a couple of years ago, when they ramped up, together with everyone else in the industry. So a few months of flow rips through a year or two's small hiring numbers.