As we know from Agents of SHIELD, Maria Hill has her own field office, where she had a meeting With Grant Ward. The office also housed Melinda May when she was working administration. Is it possible that that her office is located within the Hub. I know it's a bit of a long shot, Maria working all the way from Alaska, but after her meeting with Agent Ward, when Colson told him that he is a part of his team, they entered a room with the doctor that oversaw project TAHITI. That room looks like the Operations Comand Center that Ward, May, and Coulson meet Agent Hand in at The Hub in Episode 7