US nuclear deterrent patrols the world’s oceans l ABC News
Martha Raddatz reports on board a U.S. Navy ballistic missile submarine and explores how the most destructive warships ever built are helping keep Americans safe on “This Week.” SUBSCRIBE to ABC News: https://bit.ly/2vZb6yP WATCH MORE on http://abcnews.go.com/ LIKE ABC News on FACEBOOK: https://ift.tt/HvBA7xd FOLLOW ABC News on TWITTER: https://twitter.com/abc #ABCNews #ThisWeek #USNavy #BallisticMissiles
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