<div id="ooyalaplayer" style="width: 800px; height: 450px;"></div><div style="display:none;" id="kalturavideoplaceholder">kalturavideoplaceholder</div><div><div><script src="https://apis.google.com/js/platform.js"></script><div class="g-ytsubscribe" data-channel="BusinessInsider" data-layout="full" data-count="default"></div></div></div><p class="embed-spacer"></p><p>The US Navy equips all its surface combat ships with a powerful gun called the Phalanx. This is what it looks like in action.&#xa0;</p><p><em>Produced by&#xa0;<a href="http://www.businessinsider.com/author/eames-yates">Eames Yates</a>, Original Reporting by <a href="http://www.businessinsider.com/author/jeremy-bender">Jeremy Bender</a>.<br /></em></p><p><strong>Follow BI Video:</strong>&#xa0;<a href="https://www.facebook.com/BusinessInsider.Video" target="_blank">On Facebook</a></p>

Military & Defense

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The US Navy's last line of defense is this ultimate gun

kalturavideoplaceholderThe US Navy equips all its surface combat ships with a powerful gun called the Phalanx. This is what it looks like in action.&#xa0;Produced by&#xa0;Eames Yates, Original Reporting by Jeremy Bender.Follow BI Video:&#xa0;On Facebook

kalturavideoplaceholderThe US Navy equips all its surface combat ships with a powerful gun called the Phalanx.  This is what it looks like in action.

The US Navy's last line of defense is this ultimate gun

Eames Yates,Jeremy Bender

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