Defense Industrial Base

The network of private companies — large prime contractors and thousands of smaller subcontractors — that supply the materials, components and manufacturing capacity for U.S. weapons systems and national security. Broader than commonly understood: Lockheed Martin alone works with 13,000+ suppliers across all 50 states, of which 7,100+ are small businesses receiving over $6.9B per year. 93% of those suppliers are American.

Key figures from Zane Hengsperger’s April 2026 thread:

• The F-35 has 2,100+ suppliers; nearly half are small businesses. Machine shops in PA, ceramics labs in LA, precision engineers in MA, painting companies in AR, castings foundries in NH.
• One small shop in Cleveland runs the only 50,000-ton forging press on earth, making F-35 bulkheads in a single piece of titanium.
• Every F-35 carries 920 lbs of Rare Earths; China refines 90% of the global supply. The Pentagon discovered Chinese alloys in the F-35 through a 4-layer Supply Chain (Lockheed → Honeywell → pump supplier → magnet supplier).
• There is a 2027 deadline to eliminate Chinese rare earths from all US weapons systems.

The deeper lesson: the defense industrial base is the hidden organizational machine beneath a prime contractor — you “probably have not heard the names of 90% of Lockheed Martin’s suppliers.”

Where this appears

• You Probably Have Not Heard… (tweet)