Agreed, but only if this was someone with a lot of experience. It is possible (albeit remotely) that this person was fairly new and was put there because of fewer experienced members being available around the holidays. I would think this particular detail would be a good one to introduce newer members without the pressures of a presidential detail or a death of someone active and high-ranking in the govt. Kind of like a new 3rd infantry tomb guard walking at night when nobody is there to see them (other than their trainers), before being moved to daytime walks in peak tourist season.