I was hoping for some mention of the "Directional Wireless Installation" (DWI).<br>Step 1.  Get a Wellington bomber.<br>Step 2.  Strap a great big coil to it (diameter more than half the wingspan), with a small engine in the 'plane to drive a generator.<br>Step 3.  Fly over magnetic minefield with the coil powered up.  The mines will all detonate, and hopefully you'll be far enough away not to get knocked out of the sky by the spout of water.