I have send three Expediate Requests to NSC

but never get any feedback and now the wait is 70 days passed at NSC. I also have an offer letter in hand and after negotiation with new employer I have been spending time on site on valunteer base to get myself started because I do not wanna miss this opportunity. They almost hired someone else because they need new hire to get started soon. It all depends on how flexible you and your new employer are....good luck.