If you still have difficulty getting logged on...this is from the USAFA website:
CADET & CADET CANDIDATE TAX INFORMATION
Cadet Taxes
Most cadets don’t have many deductions and file an EZ form. The Academy has volunteers that are available on an appointment-only basis to help cadets with their taxes (free of charge) to ensure they have used all the deductions they are entitled to.
Income Tax assistance is available through USAFA/JA (located in Harmon Hall, (719) 333-3940). If your cadet (C4Cs) needs proof of attendance for you to claim him or her for part of the year, have your cadet visit the
Academy Registrar and request a letter. The letter will be available for pick up from the Registrar’s Office in Fairchild Hall.
Source:
https://www.usafa.edu/parents/cadet-financial-information/