Actually, I do not think it will take that, but I will take continued presence for a long time to come. The US has taken upon itself (with some assistance from a very few allies) to perform the required combat ops. We have left it to the Europeans to do the subsequent peace keeping role. It is not the large numbers we need to get use to, it is the duration. The Afghan battle may be over by summer, but the war has only begun. We will be dealing with this for the next half century at least at every level from search and destroy abroad to security measures here at home to some type of policy that educates and brings into 'modern' society the third world 'have nots' so that they see it is in their own interest to change their hateful ideology. Of course, the last level is both the most important and most difficult.