A Northern California teenager is fighting to recover after a devastating injury that landed him in a coma. <script type='text/javascript' src='http://z.cdn.turner.com/cnn/van/resources/scripts/van-widgets.js'></script> <div data-cnnvansinglewidget data-affiliate='gantdaily' data-videoid='van/sc/2016/06/29/ktxl_d6febec7270500e1ec4768e53a8e2c12' data-size='auto' data-autostart='true'></div>