South Korea: flew its fighter in formation with its in-house drone for the first time earlier this month, reported 26 October. A December test is to go further: the fighter's back-seat pilot would assign missions to the drone directly in flight instead of from the ground. That direct control is the plan, not yet demonstrated.
Source: ajupress.com
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The December test that would let the back-seat pilot task the drone in flight is a plan, not yet demonstrated.