The Homeland Security Committee will hear tomorrow that this unimaginable horror can be triggered by a scenario examined at length by the Commission on the EMP Threat - namely, a ship-launched, ballistic missile-delivered nuclear weapon detonated outside the atmosphere high above the United States.
China is likely developing a new strategic bomber, and has recently revealed that it has a supersonic, air-launched, anti-ship missile called the YJ-12, that can be launched by its bombers and fighter-bombers.
Last year, Iran described a ship-launched test of its Shihab-3 missile in the Caspian Sea as "successful" in spite of the fact that like an EMP, the missile detonated in mid-launch.