By Andrew McCarty The Kansas City Chiefs have lost three of their last four games and frustrations are starting to mount. During Kansas City’s 20-14 loss to the Las Vegas Raiders over the weekend, tight end Travis Kelce had somewhat of a meltdown on the sideline. He launched his helmet into the turf and sent it bouncing along the Chiefs sideline. Kelce was later spotted having a conversation with head coach Andy Reid, who looked none-too-pleased. Of the sideline outburst Reid said, “things happen.” Reid added more detail in a later response suggesting Kelce is an “emotional” player and the hea…