The Camera Equipment Checkout
It would be a rare occurrence, indeed, for a Camera Assistant to be hired and not allowed to have a checkout period, usually a single day for commercials or music videos, three days for a TV movie ("M.O.W."), and a week or two (or more) for a feature film. The only excuse that comes to mind as a reason for NOT having a checkout is if the entire camera equipment package belongs either to the production company or to the cinematographer, that the equipment is brand new and in perfect condition, and that no one else ever uses that equipment. Even then the Assistant should argue for a checkout, to familiarize yourself with the particular equipment before the shoot, to see what condition the equipment is in, to see how it is distributed and packed into cases, to see what accessories and back-up equipment there are, etc.