Sole Source to Sierra Circuits, Inc. per the attached redacted justification. All quotes submitted in response to this announcement shall be reviewed if submitted by the close date. RFQ must include s... Sole Source to Sierra Circuits, Inc. per the attached redacted justification. All quotes submitted in response to this announcement shall be reviewed if submitted by the close date. RFQ must include supporting documents: Capabilities Statement, Proof of past performance for similar work, and cage code.