These drones are being removed from service, so using them for testing is a logical decision. We intend to use the Block 20 and Block 30 modifications. They will be converted so that hypersonic missiles can be installed. The drone equipment will help determine the parameters of the test weapon.
The military believes that the use of the RQ-4 Global Hawk will not involve expensive surface ships and manned aircraft in testing. And this will reduce the cost of the program for creating hypersonic missiles.
Some of the RQ-4A Global Hawk drones have already begun to be transferred to the Grand Sky Air Force Base in North Dakota, where hypersonic weapons are being tested.