Ants in the Office

This morning, I found a tiny ant crawling across my foot as I sat at my desk. When I went to put him back into the wild outdoors where all ants belong, I discovered his brethren carrying a dead beetle out of my house. It was like a military strike.
While dozens of scouts and support troops scurried around helping and searching, a small platoon had the beetle by its legs and was booking it across the carpet and then down the ethernet cable we have draped across the threshold. In five minutes, the beetle was hauled from beneath the heater, trucked across the veranda and slid under the palm.
In less than ten minutes every ant was out of the house. Their efficiency was extremely impressive. Do you think ants work with the same ants every day? Or do they get assigned to the tasks at random? Do ants get assignments??