It is the responsibility of the organization to demonstrate that all notifications were made as required, including evidence demonstrating the necessity of delay.</p> </li> <li> <p>Delay of Notification Authorized for Law Enforcement Purposes: If a law enforcement official states to the organization that a notification, notice, or posting would impede a criminal investigation or cause damage to national security, the organization shall:</p> <ul> <li> <p>If the statement is in writing and specifies the time for which a delay is required, delay such notification, notice, or posting of the timer period specified by the official. or</p>