We don't have mains that large where I am from!! Biggest main around here is 12". But I was always told that if you hook up to a hydrant with a hard suction (most engines don't carry true hard suction hose anymore) you could steal water from the next pumper using ldh, etc. Never got a chance to...
I used to listen to Brooklyn here in North Carolina back in the late 70's and 80's. Always in the summer. Also used to hear lot's of fire dept's from Long Island on low band back in the day!