[greeneyes]

One other idea that came to mind is someone has figured out how to do a version of seismographic surveys from the air.
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That's a good possibility - there's been a lot of seismic activity particularly on the coast/ring of fire which generally translates to mid country a few days later-New Madrid. I did read something about aerial tracking, a few weeks ago—can't remember the details though.

[Steven W.]

Reportedly 4 E6's in the air right now

[Pete from Shawnee Mission]

“New Madrid...”

Thank you! Lets hope there is nothing of the sort in New Madrid/Reelfoot basin fracture zone!

[PrairieDawg]

Networked airborne sensors that can fly with precision due to GPS and controlled by small fast computers? Lots of applications possible, in my humble opinion.