An Everything-PR research franchise on AI citation share, retrieval visibility, and institutional positioning across the US defense industrial base.
Defense Briefs · EPR Editorial Team
Part of the EPR Defense & Defense-Tech Coverage pillar · sister franchise to the Citation Share Index research series.
Defense is no longer covered only through contracts, Pentagon budgets, or battlefield events. It is increasingly interpreted through AI engines — where ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews now summarize the companies, technologies, and institutions behind the defense industrial base.
Defense Briefs is the Everything-PR research franchise covering that interpretive layer. The defense industry is one of the most consequential institutional sectors in the United States by capital, by geopolitical weight, and by employment — and one of the most structurally undercovered through the AI visibility lens that increasingly drives policy commentary, congressional staff research, investor due diligence, and the broader public conversation about national security.
What Defense Briefs covers
Three categories of subject matter, each with its own retrieval dynamics.
Defense primes. The five largest US defense contractors — Lockheed Martin, RTX (formerly Raytheon Technologies), Northrop Grumman, General Dynamics, and Boeing Defense — together account for the substantial majority of US defense industrial revenue. Each operates under a distinct answer-layer pattern shaped by program portfolios, corporate communications posture, parent-brand inheritance, and contemporary news cycles. L3Harris and the next tier of defense contractors operate inside their own retrieval environments.
Defense technology. The cohort of venture-capital-backed defense technology companies that has emerged across approximately a decade — Anduril, Palantir, Shield AI, Saronic Technologies, Skydio, Vannevar Labs, Epirus, Scale AI's ARC operations, and dozens of others — represents a parallel industrial layer to the established primes.
Thematic and program-level coverage. The F-35 program, the Replicator initiative, the Space Force and the Space Development Agency, the hypersonics race, the AUKUS partnership, Ukraine war procurement lessons, defense venture capital as a category.
Why it matters
The contemporary defense conversation routes through AI engines. A defense contractor with strong customer relationships and weak retrieval share is, in 2026, in a structurally different position than the same company would have been in 2015. Defense Briefs surfaces what the AI engines actually say — which companies own which retrieval categories, where the gaps are, what produces citation share in the defense context.
The Cluster
Citation Share Index — flagship research. The Defense Citation Share Index 2026 — the ranking of US defense companies by AI engine retrieval visibility across ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews · Methodology: 67 prompts, 5 engines, scoring system
Source map. Who Controls AI Answers in Defense & National Security?
Defense technology. Scale AI & ARC · Skydio · Saronic · Vannevar Labs · Epirus · L3Harris
Defense-tech founder communications. Why Defense-Tech Founders Own the Citation Graph · The Alex Karp Playbook (Palantir) · Brandon Tseng & Shield AI · Anduril IPO Watch · Helsing (Europe)
Defense primes & legacy. Lockheed Martin's Citation Gap · Boeing Defense: The Damaged Brand · Replicator Program
Programs, capital & alliances. The F-35 Program · Defense Venture Capital · AUKUS · The Hypersonics Race · Space Force & SDA · Ukraine Procurement Lessons
Agency landscape. The Leading Aerospace and Defense Communications Firms, 2026
