1414719614889.cachedNuclear-capable Russian bombers are flying over the North Sea and the Atlantic. And U.S. Air Force officers are very concerned at what could be a rehearsal of a deadly mission. Russian bombers may be flying nuclear strike drills over the Atlantic Ocean and North Sea, current and former U.S. Air Force officers believe. At the very least, these officers tell The Daily Beast, the Russian Air Force is aggressively probing what NATO calls European airspace in an effort to gauge the reaction times of the western alliance’s defenses. More