The academy had a group of students known as the Riflemen Singers of which Frank Underwood was a member.
The Sentinel is likely based on The Citadel a military college based in South Carolina. A library is constructed to replace an older building and it is named after Frank Underwood . The old library is extensively shown in Chapter 8.
Frank Underwood mentioned that he was not an outstanding student, the President of the academy only contacted him to secure the donation for the library.
The library is paid for by Sancorp, a natural gas company which promotes drilling in Washington.
Frank Underwood has served on the Sentinel's Board of Visitors since 1994
