Does the Contracting Officer need to obtain a NITAAC approval letter prior to issuing a task order?

Question: 
Does the Contracting Officer need to obtain a NITAAC approval letter prior to issuing a task order?

No. NITAAC does not issue approval letters. Contractors can accept task orders as long as the task order award references the Prime contractor's NITAAC contract number (ex. HHSN2639999000###I).