HFD and many other major cities already utilize national high rise fire fighting procedures. A major high rise fire will tax most urban fire departments. Delays in notification, traffic delays, finding the fire, then accessing the upper floors carrying equipment at the same time people are descending in the smokey stairwells creates a real mess and a not so fast fire attack.  These fires are darn hard to fight and very dangerous, sprinkler systems buy occupants time to escape.