US Department of Defense / Lockheed Martin
F-35 Joint Strike Fighter Cost Overruns
Estimated impact: $170B+ in cost overruns; 10+ year delays
Originally estimated at $233B for 2,866 aircraft, the F-35 program has grown to $400B+ with decade-long delays. Concurrency strategy (building aircraft while still in development) locked in design flaws.
Decision context
DoD adopted "concurrent development" to accelerate delivery, building production aircraft before testing was complete. Initial cost estimates were knowingly optimistic to secure congressional funding. Three service variants increased complexity exponentially.
Decision anatomy
Red = risk factor present · Green = protective factor present
Biases present in the decision
★ Primary driver · Severity estimated from bias type and decision outcome
Toxic combinations
Reference class base rates
Across all 143 curated case studies in our library:
Lessons learned
- Concurrent development creates massive sunk cost traps when defects are found late
- Multi-service requirement consolidation exponentially increases program risk
- Initial cost anchors in defense procurement systematically underestimate by 40-80%
Source: GAO Report GAO-21-105, "F-35 Joint Strike Fighter: DOD Needs to Update Modernization Schedule," 2021 (Post Mortem)
We caught these patterns in US Department of Defense / Lockheed Martin's own record — before the outcome.
See the full bias auditwe ran — no login, no card. Then run the same 60-second audit on your own next memo.
Or leave your email, we'll run a strategic memo of your choosing and send the readout within a business day.
Workflows that fire on decisions like US Department of Defense / Lockheed Martin’s
The same Recognition-Rigor Framework that documents this case audits memos in the same shape — before the outcome forces the lesson.