I'm an old-timer who has been through the past shutdowns so I am rather philosophical about the potential of this threat. If it happens, so be it...my family will deal (my husband and I are both civil service). If it doesn't happen, I will continue to work. The commitment to my job is the same right up until I am told to go home, that is what I do, that is what I am committed to do and what I am paid to do.
I can't say I enjoy the feeling of "waiting for the other shoe to drop" while Congress and the President fight out this budget battle but that is what happens sometimes. Nothing I can do about it, so I try to spend my time worrying about the things that I can change/effect and HAVE to worry about. I'm too old and been working too long (27+ years) to let it get in the way of what I have to do!