Navy’s ‘Black Widow’ exercise tests capabilities in a North Atlantic submarine battle

As U.S. Navy brass continues to sound the alarm about Russian submarine activity in the North Atlantic, the sea service kicked off an exercise this week to hone the sort of anti-sub warfare skills that fell by the wayside in the post-9/11 world.

Dubbed “Exercise Black Widow 2020” for a reason several admirals could not explain to reporters Wednesday, the...