Over the last few years, I have repeatedly expressed concern about the potential importance of the threat of an electro-magnetic pulse that could disable or destroy electronic installations.  Such a pulse could come from an errant solar flare or other extreme space weather or it could be produced by a nuclear warhead exploded in the upper atmosphere.  Both could have devastating impacts on ground-based electronic equipment and on electric power grids.

Now comes news of a weapon that could be carried in a cruise missile that can be programmed to disable the electronic systems in individual buildings.  Apparently, the U.S. Air Force and its contractor Boeing, along with Raytheon, have created the High-powered Microwave Advanced Missile Project, or CHAMP, which was just tested over a Utah desert.

The cruise missile, which was launched from a U.S. bomber, was pre-programmed to fly over a target and shoot a burst of high power microwaves at a two-story building. It knocked out rows of personal computers and electrical systems which were shown in a video taken of the test.

Following the first target, the cruise missile then was guided to six other targets, resulting in knocking out all electronics.

Even if this was a US initiative, it sounds as though more effort needs to go into protecting UK infrastructure and critical systems against such attacks – which is more or less what I was saying about three and a half years ago.