The Pentagon’s top technology official and his deputy are resigning next month, a Defense Department official confirmed on Tuesday. Mike Griffin, the Pentagon's first undersecretary of research and engineering, and his deputy, Lisa Porter, will leave July 10, the official said. The resignations were first reported by Inside Defense. Griffin, who took on the role in early 2018, and Porter said in a letter to staff that “a private-sector opportunity has presented itself to us, offering an opportunity we have decided to pursue together,” Defense News reported. “It has been a pleasure leading this great team over the past few...