Have her report it.
It is an explosive magnetic flux compressor generator.
(an "E-bomb")
It is a directed energy weapon designed to produce an EMP.
Will fry electronics within a given radius.
Lights out.
flux compression generator (FCG)
http://www.active-duty.com/MI_FCG_FluxCompressionGenerator.htm
a directed EMP gun
Thank you. I left Neosgirl a note on your suggestion to report it.