With more than three months of comfort and a few more significant pieces added to the Chiefs’ puzzle, Kansas City can now make it official: The Chiefs plan to run some version of the 3-4 defense in 2009. "We’re going to try variations of it," coach Todd Haley said Thursday. "We’re not going to force square pegs in round holes."No more equivocating: Chiefs will run a 3-4 defense - Kansas City Star If you've been reading AP for a little while now, you already knew this was the case, whether there was an official statement or not. H/T to LTownChiefsFan.