The right systems at speed: SJT Solutions

CUI

DEPARTMENT OF THE ARMY

Program Executive Office, Ground Combat Systems

Project Manager, Ground Systems

6501 East 11 Mile Road, Detroit Arsenal, MI 48397-5000

SFAE-GCS-KO (70-1a)

16 September 2026

MEMORANDUM FOR Project Manager, Ground Systems (SFAE-GCS-GS) (COL Hart)

SUBJECT: (U) Propulsion Decision for Ground Vehicle Block Upgrade (DP-NV012-014)

DISTRIBUTION STATEMENT C. Distribution authorized to U.S. Government agencies and their contractors (Critical Technology) (16 Sep 2026). Other requests for this document shall be referred to PEO Ground Combat Systems, Project Manager Ground Systems.

1. (U) References.

Topic ARM26BX06-NV012, Agentic-AI, Schema-Driven Decision Management for Auditable Studies and Acquisition Decisions, 16 Sep 2026.
FAR 15.308, Source selection decision.
AFARS 5115.308, Source selection decision document.
DoDI 5200.48, Controlled Unclassified Information (CUI).
Locked decision schema, package/schema.json, human-locked 16 Sep 2026.
SysML 2.0 model, models/vehicle_propulsion_trades.sysml (REQ-R-600, REQ-M-2000, REQ-C-800).

2. (U) Purpose. To obtain a decision on the propulsion alternative for the FY27 ground vehicle block upgrade (point trade; episode 1 of a refreshable decision program). Schema was locked by the contracting officer before scoring. The large language model did not rank options.

3. (U) Recommendation. That the Project Manager select HE-900 hybrid-electric as the propulsion alternative. Deterministic scores against the locked schema: HE-900 0.87, D-600 diesel 0.81, T-450 turbine 0.69 (dominated). Decision readiness: READY FOR SIGN-OFF.

APPROVEDDISAPPROVEDSEE ME

Signature of COL Hart, Project Manager, Ground Systems

Date

4. (CUI) Discussion.

a. (U) Background. The block upgrade requires a propulsion down-select before IOC (24 months). This package is a single-episode point trade with a defined refresh cycle if evidence or assumptions change.

b. (U) Alternatives considered. COA 1 HE-900 hybrid-electric (recommended). COA 2 D-600 diesel (baseline / runner-up). COA 3 T-450 turbine (dominated; not competitive).

c. (U) Evaluation factors (locked by CO; no evaluation while unlocked). Range 0.35 (REQ-R-600, ≥600 km). Maintainability 0.30 (REQ-M-2000, MTBF >2,000 hr), raised from 0.25 at lock. Unit cost 0.20 (REQ-C-800, ≤$800K). Vehicle weight 0.15 (minimize).

Controlled by: PEO Ground Combat Systems / PM Ground Systems

CUI Category: CTI, EXPT

Distribution/Dissemination Control: FEDCON

POC: CPT M. Reyes, SFAE-GCS-KO, DSN 786-0000

CUI

SFAE-GCS-KO

SUBJECT: (U) Propulsion Decision for Ground Vehicle Block Upgrade (DP-NV012-014)

4. (CUI) Discussion (continued).

d. (CUI) Comparative assessment (FAR 15.308). Independent ranking against all locked factors. LLM forbidden in scoring (llm_in_scoring=false). Confidence 0.92.

Rank	Option	Score	Range	MTBF	Unit cost	Notes
1	HE-900	0.87	720 km	1,650 hr	$840K	Wins range; MTBF short
2	D-600	0.81	640 km	2,400 hr	$610K	Wins maint. and cost
3	T-450	0.69	510 km	1,100 hr	$920K	Misses range and cost

e. (CUI) Tradeoffs. HE-900 meets range (720 vs ≥600 km). Unit cost is $40K over REQ-C-800. Maintainability is below REQ-M-2000 (1,650 vs >2,000 hr) and is flagged, not disqualifying, at the CO-locked weight of 0.30. Additional cost buys 80 km of range over D-600. T-450 is dominated on range, maintainability, and cost.

f. (U) First-class schema objects (topic requirement).

Class	Record	Status
Constraints	ITAR required; single-source supply monitored; IOC 24 mo	locked
Assumptions	A1 IOC holds; A2 cell vendor qualified	testable / holds
Risks	R1 single-source ITAR pack; R2 depot backlog	monitor / accepted
Bias checks	B1 range vs depot-load weight (opened by agent)	cleared_by_officer

g. (CUI) Conditions that reverse the ranking (flip-set). Ranking reverses to D-600 if any of: maintainability weight > 0.42; HE-900 unit cost > $920K; ITAR supply status escalates monitor → critical. Refresh: re-run the locked schema when evidence or assumptions change; do not rescore by LLM.

h. (U) Human lock and evaluation method. Schema was UNLOCKED until CPT Reyes raised maintainability to 0.30, cleared B1, and locked. No evaluation while unlocked. Deterministic core only after lock.

i. (U) Provenance. Officer prompt → structured elicitation → workflow plan → human lock → SysML 2.0 digital-thread ingest → artifact validation → deterministic evaluation → flip-set → decision-readiness READY → this memorandum. Source: models/vehicle_propulsion_trades.sysml; episode 1 point_trade; reproducible against locked schema.json.

5. (CUI) Impacts.

Personnel. None.
Equipment. Propulsion selection for the block upgrade. HE-900 introduces an ITAR-controlled battery pack and inverter.
Funding. Recurring unit cost $840K versus $800K objective. Delta accepted for range performance as stated in paragraph 4e.
Schedule. A1 (IOC 24 months) holds. A2 (cell vendor qualification) holds.

6. (U) Coordination. Completed before submission. No unresolved nonconcurrence.

Office	Position	CONCUR / NONCONCUR	Date	Remarks
PAE Maneuver Ground	Decision engineer	CONCUR	16 Sep 2026	Schema, ranking, flip-set
SFAE-GCS-KO	Contracting Officer	Prepared	16 Sep 2026	Originator; human lock

7. (U) Point of contact. CPT M. Reyes, SFAE-GCS-KO, DSN 786-0000.

Encls

1. Locked decision schema (schema.json)
2. Evaluation ranking
3. Flip-set
4. Lineage / provenance record

CF:

PAE Maneuver Ground

MAYA REYES

CPT, LG

Contracting Officer

The right
systems
at speed

LATCH

Walk upstairs with
a package they can sign.

From the CO to the warfighter

LOCK

How a Decision Package is built

What leadership signs