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://www.facebook.com/abcnews FOLLOW ABC News on TWITTER: https://twitter.com/abc

#ABCNews #ThisWeek #USNavy #BallisticMissiles