Pat's Atomic Guide Service Providing quality guided fly fishing on Washington's Yakima River and other quality trout fisheries. Whether you choose to drift fish or cast dry flys on the Yakima or Kettle Rivers, match wits with wary spring creek Rainbow or Brown Trout, or experience phenomenal Still Waters with a fly rod, Pat's Atomic and Cooper's Guide Service are the region's premier fishing guides. Let our hospitality, experience and knowledge introduce you to the Eastern Slope of the Washington Cascades and Eastern Washington State.