LIFO- Last In First Out. Every airline has such a policy. But pray, do you see a downturn coming? Don't go talking yourself into one! Just remember, people are very spoilt these days, they will have their holidays come what may, especially after this summer in Northern Europe. And remember people are retiring all the time. Just get yer head down and complete your work and get on with it. Times have never been so good for pilot employment.