A dust storm carrying small amounts of rain sparks lightning across the sky over camps Leatherneck and Bastion in Helmand province, Afghanistan, May 3, 2014.
U.S. Marine Corps meteorology and oceanography personnel issued numerous weather advisories to warn coalition forces residing at the camps. (DoD photo by Lance Cpl. Darien J. Bjorndal, U.S. Marine Corps/Released). Original public domain image from Flickr