| NHB 1600.6 : NASA COMMUNICATIONS SECURITY (COMSEC) MANUAL (13678 words) |
 | The individual user or holder of COMSEC material is personally responsible for controlling and safeguarding COMSEC material while it is entrusted to his or her care, and is not authorized to lend the material to another individual without a new hand receipt issued from the COMSEC Custodian. |
 | Individuals appointed as Alternate COMSEC Custodians are responsible for assisting the COMSEC Custodian in performing his or her duties and for providing continuity of operations in the absence of the COMSEC Custodian. |
 | In those cases where material was transferred from the account or destroyed, the COMSEC Custodian should verify such actions by comparing the transfer and destruction reports with his or her Register File to assure the accuracy of the actions affecting the material for which he or she is held accountable. |