This is a samurai hairstyle, notice how the bun is placed high on the head. For the Samurai hairstyle to work best, I recommend you not to have over 8 inches of hair (check out my hair length guide) because you want your bun to be thin and blend in nicely into the contour of your head.
The TSP's core menu includes an S&P 500 index tracker (the C fund), a small-cap stock fund that tracks the Dow Jones U.S. Completion Total Stock Market Index (the S fund), an international-stock fund that tracks the MSCI EAFE Index (the I fund), and a Barclays U.S. Aggregate Bond Index tracker (the F fund).
In the simplest terms, Exchange Traded Funds are funds that track indexes like the NASDAQ-100 Index, S&P 500, Dow Jones, etc. When you buy shares of an ETF, you are buying shares of a portfolio that tracks the yield and return of its native index.