The military is facing cyber dangers that pose an "extraordinary threat" to the military as well as the U.S. "economic structure" and "education systems," a top combatant commander said this week. Air Force Gen. Victor Renuart, who leads U.S. Northern Command, told reporters during a May 13 press conference that cyber threats affect U.S. international relations and economic policy as well as military thinking. "The ability of cyber experts to infiltrate the networks we use and extract data or put...