New video shows U.S. warships launching the cruise missile strike on Syria. In a statement, the Pentagon said the U.S. took "extraordinary measures" to avoid civilian casualties. The target was Syria's Shayrat Airfield, believed to have been used by the regime to launch a chemical weapons attack earlier this week. Subscribe to the "CBSN" Channel HERE: http://bit.ly/1Re2MgS Watch "CBSN" live HERE: http://cbsn.ws/1PlLpZ7 Follow "CBSN" on Instagram HERE: http://bit.ly/1PO0dkx Like "CBSN" on Facebook HERE: http://on.fb.me/1o3Deb4 Follow "CBSN" on Twitter HERE: http://bit.ly/1V4qhIu Get the latest news and best in original reporting from CBS News delivered to your inbox. Subscribe to newsletters HERE: http://cbsn.ws/1RqHw7T Get your news on the go! Download CBS News mobile apps HERE: http://cbsn.ws/1Xb1WC8 Get new episodes of shows you love across devices the next day, stream local news live, and watch full seasons of CBS fan favorites anytime, anywhere with CBS All Access. Try it free! http://bit.ly/1OQA29B --- CBSN is the first digital streaming news network that will allow Internet-connected consumers to watch live, anchored news coverage on their connected TV and other devices. At launch, the network is available 24/7 and makes all of the resources of CBS News available directly on digital platforms with live, anchored coverage 15 hours each weekday. CBSN. Always On.