Not only are security contractors cost efficient, but also they have a large pool of able-bodied applicants. Military personnel who are in the combat arms branch often do not have the skills necessary to successfully transition into the civilian world. If they enter the military straight out of high school or if they lack a high school degree, then when they leave the military they simply lack the advanced degrees to compete with their civilian counterparts, especially during a highly competitive recession. The military does not teach derivatives, stock options and year-end budgets.