; and (2) classified at the Top Secret/Sensitive Compartmented Information level. (c) Subsequent notifications If the Director of National Intelligence determines that the Islamic Republic of Iran has engaged in significant enrichment activity subsequent to the submission of a notification under subsection (a), the Director of National Intelligence shall submit to the appropriate congressional committees and congressional leadership— (1) not later than 48 hours after making a determination that such significant enrichment activity has occurred, a notification of the determination; and (2) not later than 24 hours after the submission of the notification under paragraph (1), a 1-page document with respect to the determination.