The F-35 Joint Program Office (JPO) has completed development of the aircraft’s software blocks 2B and 3i, according to a statement from prime contractor Lockheed Martin [LMT].Lockheed Martin spokesman Mark Johnson said Monday Block 3i software will provide the F-35 with initial warfighting capability on upgraded computer hardware. Johnson said Block 3i is the software that the Air Force will use to declare initial operational capability (IOC) in August.With development of these two blocks complete, Johnson said the program will…