F-35 Block 4 jet fighter could become killer for the Navy with Small Diameter Bomb II, Aim 9X Block II

After years of expensive development, the first combat-capable Block IIIF F-35 stealth fighter will enter service in this year, yet the Pentagon already is looking ahead to adding capabilities to a follow-on model called the F-35 Block 4 -- an upgrade so ambitious, its already budgeted to cost $16 billion. The National Interest reports. Continue reading original article

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