Secure Multi-Source Data Fusion Environment for pLEO Constellations

Opportunity SF254-D1204 no longer available

Status changed from Open to Open

**Summary of Q&A Changes:** Removed 4 questions (Q1, Q7-Q10 from previous version) and reorganized remaining content. Key clarification added: **Table of Contents and Glossary DO count against the 25-page limit** (Q8, contradicting earlier Q4/Q5 responses). Consolidated subcontractor LOI placement guidance and expanded sandbox vendor-isolation definition with infrastructure flexibility and AI/ML configuration preferences (no training, configuration-focused approach preferred).

# Q&A Changes Summary **New Answers Added:** - **Q2**: Confirmed that a sandbox with limited sensor feeds supporting left-of-launch custody is acceptable, with extensibility to broader feeds later. - **Q3**: Clarified that zero-trust is desired but not mandatory; a credible path to zero-trust post-Phase II is acceptable. **Key Technical Clarifications:** - Q9 updated to confirm Table of Contents and Glossary **DO count** against the 25-page limit (contradicts earlier Q4/Q5 responses).

**Key Changes to Q&A:** **New Questions Added (3):** - Q1: Forms required for Volume 5 (Lifecycle Funding Agreement Certification, Funding Agreement Certification, Data Rights Assertions, DCAA pre-award survey, DD 2345) - Q2: Whether sandbox with limited sensor feeds for left-of-launch custody is in-scope if extensible to broader feeds later - Q3: Whether zero-trust is a firm Phase II requirement or if a path to future zero-trust implementation is acceptable **Contradictory Answer Updated:** - Q4/Q5 vs. Q9: Previously answered that cover page, table of contents, and glossary do NOT count toward 25-page limit (Q1-Q2). **Updated answer (Q9) now clarifies: Table of Contents and Glossary DO count against the 25-page technical volume page limit.** This directly contradicts the earlier responses. **No changes to answers on:** subcontractor LOI placement, technical validation methods, project scope alignment, or sandbox/AI-ML specifications.

# Q&A Changes Summary **Key Changes:** 1. **New clarification on page limits (Q1-Q2):** Two new questions added specifically for topic SF254-D1205, directing applicants to Release 12 Instructions (pages 65, 76) for Technical Volume requirements. Notably avoids directly answering whether cover page/TOC/glossary count toward the 25-page limit. 2. **Contradictory answer on page limits (Q6):** Previous answer stated "Table of Contents and Glossary DO count against the 25-page limit." New Q1-Q2 responses redirect to instructions rather than confirming this, creating potential confusion between topics. 3. **Content consolidation:** Q&As from previous version reorganized/renumbered but substantive answers remain largely unchanged (D2P2 feasibility evidence, subcontractor LOI placement, Watchtower Fusion scope, vendor-isolated sandbox details all retained). 4. **Missing Q8:** Previous question about NEBULA/OCT backward compatibility expectations was removed entirely with no replacement answer provided. **Bottom line:** Minimal substantive changes; primarily administrative reorganization with new page-limit clarification for SF254-D1205 that paradoxically defers to instructions rather than clarifying.

Status changed from Pre-Release to Open

# Summary of Q&A Changes **New Q1 added:** Clarifies Phase II evaluation criteria—multi-sensor ingestion stress tests (SV sensors, ground-based, commercial data) are most compelling for feasibility evidence. **Reordering:** Previous Q1-Q8 shifted to Q2-Q8; content substantively unchanged from prior version.

Close Date changed from 2026-03-04 to 2026-04-29

Open Date changed from 2026-02-11 to 2026-04-01

Close Date changed from 2026-02-25 to 2026-03-04

Open Date changed from 2026-02-04 to 2026-02-11

Close Date changed from 2026-02-11 to 2026-02-25

Open Date changed from 2026-01-21 to 2026-02-04

Close Date changed from 2026-02-04 to 2026-02-11

Open Date changed from 2026-01-14 to 2026-01-21

Q&A section updated

Content updated: description, objective, phase_1_description, phase_2_description, phase_3_description

Q&A section updated

Content updated: description, objective, phase_1_description, phase_2_description, phase_3_description