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 as a regular soldier you need to be at least 16 years old, although you can start the application process earlier, with your parents' permission. If you're under 18, you'll also need parental consent to join. You should be in Army phase 1 training before your 33rd birthday. To apply to become a regular officer you need to be between 18 - 28 years and 11 months, although you can apply for sixth form and university sponsorship before you reach this age.