32 CFR Attachment D to Subpart B of Part 147
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
If the requirement is for | And the person has this access | Based on this investigation | Then the investigation required is | Using standard
Confidential Secret; “L” | None | None | NACLC | A
| | Out of date NACLC or SSBI | |
| Conf, Sec; “L” | | |
Top Secret, SCI; “Q” | None | None | SSBI | B
| None; Conf, Sec; “L” | Current or out of date NACLC | |
| | Out of date SSBI | |
| TS, SCI; “Q” | | SSBI-PR | C
If the requirement is for | And the age of the investigation is | Type required if there has been a break in service of
0-23 months | 24 months or more
Confidential | 0 to 14 years. 11 mos | None (note 1) | NACLC
| 15 yrs. or more | NACLC |
Secret; “L” | 0 to 9 yrs 11 mos | None (note 1) |
| 10 yrs. or more | NACLC |
Top Secret, SCI; “Q” | 0 to 4 yrs. 11 mos | None (note 1) | SSBI
| 5 yrs or more | SSBI-PR |
Note: As a minimum, review an updated Standard Form 84 and applicable records. A reinvestigation (NACLC or SSBI-PR) is not required unless the review indicates the person may no longer satisfy the standards of Executive Order 12968.