1639.7—Types of decisions.
(b)
Upon the expiration of a 2-D classification, a board shall review any request for extension of the classification in the same manner as the first request for Class 2-D. This section does not relieve a registrant of his duties under § 1621.1 of this chapter.
(c)
The board may deny a claim for Class 2-D when the evidence fails to merit any of the criteria established in this section.