That is a very impressive story, especially when you consider that in order to have 11,500 ft density altitude at a 5,500 ft elevation runway the outside temperature needs to be in the neighborhood of 60 deg C. Must have been uncomfortable! I'm not sure how many places get 10K ft density altitude every day but I reckon not many of them are at 5,500 ft as it would require the temps to be consistently in the mid 40s C. So I can't imagine where where this heroic pilot is doing his flying, but I'm glad I'm not him.
OOPS. 9,500 not 11,500. My bad.
And WHK has had a few 40's recently.