5/20/26: Amendment 01- The solicitation response due date is hereby extended by 48 hours to May 22, 2026 at 4:00pm ET. The National Institute of Standards and Technology (NIST) has a requirement for a... 5/20/26: Amendment 01- The solicitation response due date is hereby extended by 48 hours to May 22, 2026 at 4:00pm ET. The National Institute of Standards and Technology (NIST) has a requirement for an optical frequency domain reflectometer at its Gaithersburg, Maryland campus. Please see attached Solicitation# 1333ND26QNB030216 and related attachments 1 (NIST Requirements) and 2 (Applicable Provisons and Clauses) for full details.