I've done Ham Radio operator stuff at a major metropolitan marathon multiple times and the Hams are really just there for data collection. Cell phones have no

I've done Ham Radio operator stuff at a major metropolitan marathon multiple times and the Hams are really just there for data collection. Cell phones have no problems operating in ultra-dense environments any more. You could say "what if the phones go down" but in an emergency situation the professionals have their own trunked radios to use.