The two on the bottom seated are showeing disrespect by their indifference. Do they have some kind of medical problem? His spine must have a congenital weakness.
If you look closely there, there are no chairs. Those who are sitting can be assumed to have come in on those chairs. Indifference? Never assume such a thing from a snapshot. Nit Picking.
I don't think Mikulski is sitting. I think she is just really short.