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.
Be a U.S. citizen or nationalized to be a Reserve or National Guard officer. To enlist, you must be a U.S. citizen or a resident alien. Age requirements differ between branches of service, but in general you must be between the ages of 17-42 with no prior service (NPS). Note: Seventeen year olds need parental consent.