Guys from Wisconsin and Main and Ohio, shipped to southwest OK in August, have certain problems with the climate. Like collapsing from heat. Takes a bit to get used to it.
Rifle range at 112F plus sudden thunderstorm equals soaked uniform, armor and weapon and, since the temp never dropped below 112, absolute freakin' misery for the next few hours.
Comment from one of the guys from Wisconsin: "You've got tarantulas and scorpions and all kinds of critters I never saw before!"
Mice who hide in somebody's ruck in the field and jump out in the barracks have a short life span.
People who've never camped find their first experience in southwest OK to be less than wonderful. Even without the DI there's the ticks, and mosquitos, and lizards and snakes and bats and coyotes, etc.
People from the more southern states do NOT expect what the weather can do here. Like going from lows in the 70's to, within 48 hours, highs in the 70's. And back to lows in the 70's, highs in the 90's. In September.
He started AIT the other day, as in first classes in his MOS, so on it goes.