Navy Shifts Attack Submarine Strategy to Increase UnderSea “Spy” Missions The Navy is expanding its attack submarine strategy to further emphasize enhanced undersea “spy” missions Kris Osborn · May 28, 2018 Please leave this field emptyStay Updated with Warrior Maven Subscribe for daily military news and updates delivered straight to your inbox. We don’t spam! Read our privacy policy for more info. Check your inbox or spam folder to confirm your subscription.