18 August 2026: The Sources Sought (attached) response date has been revised to 24 September 2026 to correctly reflect this notice.

14 August 2026: The Industry Day will be held virtually via Microsoft Teams on Friday, 4 September 2026 from 12:00 – 1:00 PM Central. Below is the link to register:

https://www.eventbrite.com/e/industry-day-for-sentinel-utility-corridor-at-malmstrom-afb-montana-tickets-1997975989970?aff=ebdssbdestsearch 

11 August 2026: The attached Sources Sought estimated magnitude has been updated to between approximately $1.4B to $2.0B.

Please reference the attached Sources Sought and link to the Questionnaire (also included herein): https://forms.osi.apps.mil/r/PmqwFRQpQh 

This notice will be updated when the Industry Day is available for registration.

Additional attachments include the Progressive Design-Build (PDB) with Other Transaction Authority (OTA) Playbook and Placemat to aid in understanding the acquistion process and procedures.