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The RQ-4 Block 30's capabilities were planned to match the U-2's by FY 2016, the replacement effort is motivated by decreases in the RQ-4's cost per flying hour. [ 153 ] The U-2's retirement was calculated to save $2.2 billion. $1.77 billion will have to be spent over 10 years to enhance the RQ-4, including $500 million on a universal payload ...