This 2015 G36 has 420 hours since new on the airframe and on its Continental IO-550 engine and three-blade heated propeller.
Stratolaunch will work with the Military Defense Agency to test systems designed to take out hypersonic weapons.
But we'll be back tomorrow with more updates on the war in Ukraine. Here are the key lines from today: Outgoing US defence secretary Lloyd Austin announced a $500m (£407m) aid package for Ukraine ...
Vladimir Putin has spoken to Azerbaijan's president about the plane crash and apologised ... shadow fleet of ageing tankers used to evade sanctions on the sale of Russian oil.