# B-21 West Alert Apron Environmental Protection Shelters at Ellsworth Air Force Base (AFB), South Dakota (SD)

Notice a11687bc02cf48978daa99a709ea5433 (solicitation W9128F26RA004) from DEPT OF DEFENSE, W071 ENDIST OMAHA, posted 2026-03-10, responses due 2026-03-31T20:00:00.000Z. Status: open.

| Field | Value |
| --- | --- |
| Notice ID | a11687bc02cf48978daa99a709ea5433 |
| Solicitation number | W9128F26RA004 |
| Type | Solicitation |
| Agency | DEPT OF DEFENSE |
| Sub-tier | DEPT OF THE ARMY |
| Office | W071 ENDIST OMAHA |
| Posted | 2026-03-10T12:55:17.000Z |
| Response deadline (UTC) | 2026-03-31T20:00:00.000Z |
| Set-aside | - |
| NAICS | 236220 |
| PSC | Y1BZ |
| Place of performance | - |
| Award | - |

## Description

Amendment 3: The purpose of this amendment is as follows: 1. The proposal due date is extended to 03/31/26 at 2:00 PM CST. 2. Revised 00 21 00 (see 00 21 00, dated 03-09-26), 3. Revised 00 22 00 (see Summary of Changes, dated 03-09-26). All other terms or conditions remain the same.

## Sources

- View on SAM.gov: https://sam.gov/opp/a11687bc02cf48978daa99a709ea5433/view
- Data as of 2026-11-14. Source: https://sam.gov/data-services/Contract%20Opportunities/datagov

## Cite this

"B-21 West Alert Apron Environmental Protection Shelters at Ellsworth Air Force Base (AFB), South Dakota (SD), SAM.gov contract opportunity a11687bc02cf48978daa99a709ea5433." samgovapi.io, https://samgovapi.io/opportunity/a11687bc02cf48978daa99a709ea5433, data as of 2026-11-14. Primary record: https://sam.gov/opp/a11687bc02cf48978daa99a709ea5433/view

## API and MCP

- REST: GET https://samgovapi.io/api/v1/opportunities/a11687bc02cf48978daa99a709ea5433
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