From the notice

This item requires Government Source Approval prior to award. If you are not an approved source, you must submit, together with your proposal, the information detailed in the NAVSUP Source Approval Request (SAR) Brochure which can be obtained on the internet at: [link] received which fail to provide all of the data required by the SAR brochure will not be considered for award under this solicitation. Please note, if evaluation of a source approval request submitted hereunder cannot be processed in time and/or approval requirements preclude the ability to obtain subject items in time to meet Government requirements, award of requirement may be continued based on Fleet support needs.