When do I need to show my ticket??

The standard process at all airports for at least the past year has been that you need to show your boarding pass and ID to get by the first TSA person. Then once you make it through the metal detector, you need to show your boarding pass one more time.

Well, appearantly this standard process isn't all that standard, or is optional for some. At Milwaukee (MKE) today, they use a different process. The first check is still the same, but then a few feet later when you are placing your bags on the conveyor the TSA Agent assisting you requests your boarding pass and checks it then. The agent on the other side of the metal detector doesn't give a rip about whether or not you have a boarding pass. Seems quite different. I would think that the same process would be and should be used at all airports in order to lessent the confusion for travellers and to be able to manage traveller expectations. I just don't see a reason for this deviation...