without any AC until you could get them started. i would drink at least 3 water bottles in that 30 to 40 minutes until we could get the engines going. The sweat was incredible. There would be a steady stream rolling off my chin. Could actually start to refill bottles with sweat. Wasn't great either to then have a 12 hour flight ahead being drenched in sweat. After my first tour they probably figured that wasn't safe and started putting portable air units on the planes after that,