Keep in mind that the headline number (1 trillion dollars) includes the cost to service 2000 F-35 over 50 years. The amount spent on R&D and building it is in t

Keep in mind that the headline number (1 trillion dollars) includes the cost to service 2000 F-35 over 50 years. The amount spent on R&D and building it is in the (large, but not as eye-watering) 300 billion dollar range.