The U.S. dollar is the official currency of East Timor, Ecuador, El Salvador, Federated States of Micronesia, Marshall Islands, Palau, the Caribbean Netherlands, U.S. territories such as Puerto Rico, American Samoa and the United States Virgin Islands and for banknotes, Panama.
Entrance test scores. When you apply to join the Air Force as an enlisted Airman, you will take the Armed Services Vocational Aptitude Battery (ASVAB) entrance exam. High school seniors or graduates must achieve a 36 AFQT (overall score) as the minimum qualifying score. GED holders must achieve a 65 AFQT.
To join the Army Reserve, you must be a U.S. citizen or a resident alien between the ages of 17 and 27. Seventeen-year olds need parental consent. You must have a high school diploma, and have no more than two dependents.