There was and incident because the paratrooper who carried the Spanish flag (one of the stellar moments every year) hit a streetlight and got hanged down on it. The poor man was absolutely devastated afterwards, who can blame him. Queen Letizia had a very warm gesture towards him at the end of the parade, taking a time to confort him and telling him: "it is allright" and "thanks for the work", video here:
And I say Queen Letizia because the good and beloved King greeted him and passed by without looking twice, and only came back to have sone words with him after his wife had done so.
This is being talked a lot on the media, with shy praise for Letizia individually and mostly praise for both "Their Majesties". Let's not permit any compliment to the cold witch of the north, as per usual
BTW, video of the incident (I must admit I expected worse by the "crack" sound, it was pretty scary):