 or content were affected and describe procedures that have 
been put in place to prevent similar occurrences in the future. Repositories may also conduct 
                                                 
2 See http://www.repositoryaudit.eu/. 
AUDIT AND CERTIFICATION OF TRUSTWORTHY DIGITAL REPOSITORIES 
CCSDS 652.0-M-1 
Page 5-14 
September 2011 
a variety of disaster drills that may involve their parent organization or the community at 
large. Contingency plans are especially important and need to be test