Thanks Vern! The example you provided puts it into perspective. As for the options, essentially the new analysis work is repetitive, so it isnt just done once and is over, so the customer wishes for it to also be done in the option years. So I am trying to determine if modifyig the option periods to incude this work can be done as a within scope change or does modifying the option periods really mean that I would need the J&A to add this extra analysis piece?