Spoiler (click to reveal)
So, the description of the Search action on the Action card says "If you are in an eligible city, discard one or more cards matching the color of your city to advance a search party token".
But if we are searching for the Stockpile in Atlanta, must we always discard at least one blue card, even if the next space on the search track isn't blue? Or can we just discard whatever is next on the track? For instance at the start of the search, we need two red cards in a row, but do we also need a blue to kick off the search?