"Mitigation strategies for FEMA command, control, and communications during and after a solar superstorm"
https://www.governmentattic.org/24docs/UnpubFEMAgeomagRpts_2010.pdf
"Mitigation strategies for FEMA command, control, and communications during and after a solar superstorm"
https://www.governmentattic.org/24docs/UnpubFEMAgeomagRpts_2010.pdf