Satellites the U.S. military relies on to wage war -- with the exception of those that operate on extremely high frequencies -- are at risk of being rendered inoperable by jamming and cyber attack, a "reality that should be considered a crisis to be dealt with immediately," an influential Pentagon advisory panel warns in a new report. The Defense Science Board Task Force on Military Satellite Communication and Tactical Networking, in an unclassified summary of a classified report, finds that...