( Make sure to paraphrase so you don't get striked for plagiarism!)
The scientist Georg Steinhauser looked within his bellybutton to solve the mystery of what bellybutton lint contains. Austrian chemist ( Georg Steinhauser) spent 3 years figuring this out! Georg presented what he discovered to and online Medical Hypotheses and he analyzed over 500 samples of the lint to determine the makeup of it, later to find out that it was made up of the cotton from clothing, they weren't alone though. Georg also discovered things such as dead skin, sweat, dust and fat. Georg summed it up that a way to get a lint-free bellybutton is to shave the hairs inside that play as hooks, al though the lint does play an important job. It's a way of protecting all the germs that enter your bellybutton!
I believe the answer is <span>multiple deployments
</span><span>multiple deployments refers to the millitary personels who were assigned to the battlefield more than one round of millitary assignments.
For the first timers, the rookies tend to haven't realized cold hart truth about the horror that one might experience in the battlefield.
These people would develop higher level of stress for the next assignments because they already realize the worst case situation that they might have to face.</span>
