The U's are in the offensive backfield

[l3will]

Here in Minnesota, the umpire is already placed in K's backfield for
punts. He is responsible for the snapper, interior numbering exceptions
and line play.

Most umpires here like it...

I'm not sold on it, since it makes for some interesting decisions when
K decides to be A and go for it... does the umpire sprint back behind
to his normal position? I'm sure you can think of many more dilemmas for
where the Umpire should be positioned.