Thanks.
weez_1000, I tend to politely ignore the (non TSA) security agents line management unless it makes sense. I respect their jobs but decide for my self where to go. I've seen them turn away people from fairly empty security lanes and send them from C3 to C1 which is ridiculous. Also had a bad experience with a rather unprofessional agent last summer leaving for vacation. Instead of politely asking people to move somewhere was snapping and addressing people as "yo, yo". I think it went something like "snap snap yo, yo move"...pointing at people. Kind of the way I would get my dogs attention when he was bad but I use his name. Folks were kind of surprised a security agent was doing this.
I have learned to go with the flow at airports and have never in my life had an issue with uniformed or other security at any airport worldwide and he ticked me off so much that I dressed him down and told him to never to point at people and address me, my family or anyone like that again. Fortunately he's the exception. I travel enough to recognize some of the agents and I never saw him again...