Photo credits 1-5

1. US National Oceanic and Atmospheric Administration. June 4, 2002.
<http://gimp-savvy.com/cgi-bin/img.cgi?noaaHAppRUN4Wp62450>

2."Dark Cloud." US National Ocean and Atmospheric Administration. June 4, 2002. <http://gimp-savvy.com/cgi-bin/img.cgi?noaad3w1qyqw1Jk2483>

3. "Forked Lightning" US National and Atmospheric Administration. June 4, 2002.
<http://gimp-savvy.com/cgi-bin/img.cgi?noaaKZ2r10WtwWA62>

4. "Big Strike" US National and Atmospheric Administration. June 4, 2002.
<http://gimp-savvy.com/cgi-bin/img.

5. "Multiple Strikes" US National and Atmospheric Administration. June 4, 2002.
<http://gimp-savvy.com/cgi-bin/img.cgi?noaajX2yGkZAlqs2368>