1. Px = Ï P*x. where Px is the domestic price (in domestic currency), P*x is the price abroad (in foreign currency) and Ï is the exchange rate (price of foreign currency in units of domestic currency). This relationship is called the law of one price.
Get certified as a licensed military psychologist. Certification is generally voluntary, but it will make you more attractive to employers in the military and confirm your skills. To become licensed, you will need to complete a doctoral degree, Ph.D or Psy.D, and do two years of supervised training.
For the FBI you need a degree, usually science or law but i think its open for any kind of degree. CIA you need to be military or have a specialist skill, just like our mi5 they do recruit civilians. You name it they use 'em.