The 1-1 Cowboys will take on the 0-2 Seahawks in Seattle on Sunday. Here are five things to know about the Seahawks. Legion of Boom is no moreThe Seahawks went 56-23 from 2012-2016. They reached two Super Bowls and one won. Those teams were built on the Legion of Boom, Seattle's Top 10 defense with perennial Pro Bowlers all over the field.