?US Air Force must retrofit 108 F-35As

The air force is now facing a fleet of 108 F-35As that must be retrofitted from the Block 2B or 3i configuration, Lt Gen Jerry Harris, USAF deputy chief of staff for strategic plans and requirements, states in a 16 February testimony to Congress. The USAF and the F-35 Joint Programme Office are working together on a Block 3F upgrade plan.

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