The U.S. Navy aircraft carriers USS <i>Hornet</i> (CV-8) and USS <i>Enterprise</i> (CV-6) underway during the Doolittle Raid, in April 1942. The photo was (obviously) taken after the U.S. Army Air Forces North American B-25 <i>Mitchell</i> bombers had taken off from <i>Hornet</i>, as aircraft of her own air group are now on deck.<br>
The photo was taken from the heavy cruiser USS <i>Salt Lake City</i> (CA-25).
U.S. Navy photo <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/127906254@N06/38554082822/">80-G-324201</a>