For the study,they aimed for at least ten hours of sleep each night during the season.
VOA: special.2010.06.09
Once he found his footing as an artist, he arranged his life so he could study its moods atnight from city wharves and on ferry rides to and from New Jersey.
What keeps national security experts who study this up atnight, is the fact that an EMP blast has the capability to wreak havoc on critical infrastructure such as telecommunications, computer systems, and even the power grid.