Kevin was relatively unsuspecting that he had a visitor, up until the point that he was addressed. Which in all fairness, was more because he had a lot on his mind than any real failure in observational or cognizant skills on his part. With what he had done before, he could be plenty observant when need be. It was just that this box was heavy, it was hot, and the like. So he could be forgiven for not noticing the visitor until she had spoken to him. 

"Oh, hello," he said after a moment, putting the box down on the nearest available flat surface that he could find before walking up to the dark haired woman. "Yes, that's me." He expected that it was just a courtesy call, but one could never be too sure. As such, he offered a hand to shake, if she so chose to.

Meanwhile, Mankey would continue unpacking the boxes from the truck. Someone had to keep doing it, lest they be here all day.