E.  Who reviews and who signs it?

AFFARS 5301.602-2(c)(4)(iii) requires legal review of source selection decisions and supporting documentation for full tradeoff acquisitions.  Although acquisitions using LPTA or PPT procedures are only required to have a legal review over $500,000 (Operational and SMC) and over $1,000,000 (AFMC Non-Operational), it is nonetheless a good practice to request a review even when it is not required.  Legal counsel should review the SSDD for "legal sufficiency" as well as other guidance they wish to impart.  In addition to legal review, source selection experts should review the SSDD prior to SSA signature.  When a SSAC is used, the SSA may request that the SSAC Chair review the SSDD.  Since the SSDD is the SSA's integrated assessment, the SSA must sign the SSDD and direct award to be made by the CO.  If the CO is the SSA, the CO should sign the SSDD as the SSA rather than as the CO.

Note:  Regulatory threshold requirements may have changed; it is a good practice to review regulations for current thresholds.