“ As a condition of obtaining access to classified information, employees in the Executive Branch are required to sign "nondisclosure agreements" that detail the employees' obligation of confidentiality and provide for penalties in the event of unauthorized disclosure. Two such nondisclosure forms are at issue in this case. One, Standard Form 189, was devised by the Director of the Information Security Oversight Office (DISOO) (now appellee Garfinkel) ; the other, Form 4193, was created by the Director of Central Intelligence (DCI) (now appellee Webster) . ”

“ Brief for Appellants 20. We decline to decide the merits of appellants' request for individualized notice to these employees, however, because the questions whether individual notice is required by § 630 and whether appellants' complaint can be read to request such notice for former employees, see Brief for Appellees 32, n. 24 (arguing that it cannot be so read) , are questions best addressed in the first instance by the District Court. ”

“ Indeed, appellees urge us to hold the case moot to the extent that it challenges the use of the term "classifiable" in Forms 189 and 4193. Brief for Appellees 31-32. As to current employees who have been notified that the term "classifiable" no longer controls their disclosure of information, the controversy is indeed moot. Appellants emphasize, however, that former employees have not been informed of the switch in terminology; as to them, the controversy whether they should have received notice of this change remains alive. ”