The F-16 production line continues to turn out Falcons at a rate of about six per month, according to June Shrewsbury, Lockheed’s vice-president for F-16 programs. There are now five different configurations—bound for nine countries—intermixed on the assembly line. Lean manufacturing techniques allow a mass-production approach to what are essentially customer-specific versions. Lockheed calls this “mass customization.” In all, the company has produced more than 120 different configurations.
The rate of building B-21 bombers would speed up if the fiscal 2026 defense budget passes. But it remains unclear how much capacity would be added, and whether the Air Force would simply build the bombers faster, or buy more.
