Towards the begining when Mark and A.J. are talking and then the boss comes and they go to open the store, as they go in you see a girl walking by before they change angles, she's wearing a greenish striped (?) shirt and she has curly blonde hair, but when they show the shot of A.J. and Mark in the store you look out the window and SHE'S GONE!! unless she suddenly SPRINTED out of site, I'd say they got lazy with the extras, or didn't realize that they left her in that first shot.