A lightning strike starts the <a href="https://en.wikipedia.org/wiki/Blackwater_Fire_of_1937" id="mwyQ" rel="mw:WikiLink" title="Blackwater Fire of 1937">Blackwater Fire of 1937</a> in <a href="https://en.wikipedia.org/wiki/Shoshone_National_Forest" id="mwyg" rel="mw:WikiLink" title="Shoshone National Forest">Shoshone National Forest</a>, killing 15 firefighters within three days and prompting the <a href="https://en.wikipedia.org/wiki/United_States_Forest_Service" id="mwyw" rel="mw:WikiLink" title="United States Forest Service">United States Forest Service</a> to develop their <a href="https://en.wikipedia.org/wiki/Smokejumper" id="mwzA" rel="mw:WikiLink" title="Smokejumper">smokejumper</a> program.<sup about="#mwt81" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-15"}}' id="cite_ref-15" rel="dc:references" typeof="mw:Extension/ref"><a href="./August_18#cite_note-15" id="mwzQ" style="counter-reset: mw-Ref 15;"><span class="mw-reflink-text" id="mwzg">[15]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-15"><cite about="#mwt78" class="citation web cs1" id="mwBzk"><a class="external text" href="https://archive.today/20130630035137/http://www.fireleadership.gov/toolbox/staffride/library_staff_ride5.html" id="mwBzo" rel="mw:ExtLink nofollow">"Staff Ride to the Blackwater Fire"</a>. Wildland Fire Leadership Development Program. Archived from <a class="external text" href="http://www.fireleadership.gov/toolbox/staffride/library_staff_ride5.html" id="mwBzs" rel="mw:ExtLink nofollow">the original</a> on 2013-06-30<span class="reference-accessdate" id="mwBzw">. Retrieved <span class="nowrap" id="mwBz0">June 29,</span> 2013</span>.</cite><span about="#mwt78" class="Z3988" id="mwBz4" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=unknown&amp;rft.btitle=Staff+Ride+to+the+Blackwater+Fire&amp;rft.pub=Wildland+Fire+Leadership+Development+Program&amp;rft_id=http%3A%2F%2Fwww.fireleadership.gov%2Ftoolbox%2Fstaffride%2Flibrary_staff_ride5.html&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AAugust+18"></span></span>