The US Navy’s Los Angeles-class submarines may have their origins in the 1970s, yet the boats have continued to remain relevant and performed critical protective functions in the service for decades.

Grading a team’s draft class is mostly subjective, but there are advanced metrics that provide deeper insight into whether a team had a successful draft. Here’s PFF’s explanation on what WAA means: ...

Add Yahoo as a preferred source to see more of our stories on Google. Los Angeles-class fast-attack submarine USS Asheville (SSN 758) steams forward off the coast of Guam during a photo exercise, Dec.