Seattle Seahawks: British NFL coach Aden Durde on Devon Witherspoon, Nick Emmanwori and learning from Super Bowl champion Philadelphia Eagles

The Seattle Seahawks boast an immoveable spot among the NFL's greatest and most distinguished defenses in history. With as much comes a lofty bar for any Legion of Boom disciple, successor or remodeller.

British defensive coordinator Aden Durde, coupled with head coach Mike Macdonald, is the man tasked with overseeing Seattle's evolution in the post-Pete Carroll era.

He does so at a time when static defense is no more, when coverage disguise is king, when safeties are field-fogging yo-yos and when coaches are crafting their own interpretation of the Vic Fangio system.

Durde is gearing up for his second season as defensive coordinator in Seattle having been plucked from the Dallas Cowboys staff to join Macdonald last February. Year one offered promise; year two teases even more.