My USN community is working hard to improve the process for selecting personnel for the prospect of mobilization. Depending upon how you look at the list, I am either 85th or 20th. And that depends upon a lot of things! The demand will depend upon a huge number of factors.
At present there are only 10 members of my community mobilized. In fact, since 9/11, only 32 members of my particular specialty have been recalled. There have been a number of volunteer actions, but we have not borne the burden of our colleagues in the other services.
It means there is a list.
There has always been a list.
When I originally received mob orders in 2004 (cancelled three days later! - why, I don't know - it's the Navy, son), they came out of the blue. I had some advance warning, but they still hit the family like a ton of bricks.
The estimated pull for 2007 is 10, maybe.
It could be 40, it could be zero.
It could be everyone.