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 enlist in the Army Reserve you must be: 1  Between the ages of 17â35 (must ship to basic training prior to 35th birthday) 2  A U.S. citizen or registered alien â U.S. Citizens or Permanent Resident Aliens (people who have an INS I-151/I-551 âGreen Cardâ) may join the U.S. Military.  Healthy and in good physical condition.