Gerard DeCosta’s picture has been shared on social media frequently since the Chiefs won Sunday’s AFC Championship Game. DeCosta is a Chiefs fan who was part of the construction crew that began work on Allegiant Stadium in Las Vegas in 2017. He allegedly went to work making sure the Chiefs were a permanent part of the Raiders’ home. This is from a 2017 Las Vegas Review-Journal story: “A Chiefs fan named Chris Scherzer posted a photo of a man wearing a white hardhat and dark glasses and holding a red and gold Chiefs banner with the inscription ‘Chiefs Kingdom’ on his Facebook page. ‘Flag buried…