Most North American tribes had to cross each other's territory on a regular basis with the changing of the seasons. Old men, women, children and infants moving as stealthily as possible. A crying baby would give the whole tribe away, so they cured their infants of crying within the first few weeks of life. I could tell you how, but I promised never to reveal their secret. Just remember, the stereotype of a stoic indian wasn't just created out of thin cloth. There's a reason they grew up like that.