Do you have other investment accounts or cash savings? Cash and savings balances count toward your emergency fund. They are also held at 0% growth in every projection and kept out of the market simulation, so they never earn or lose with the market. Pick Brokerage or Other taxable account for money you expect to grow; the projections treat withdrawals from both as ordinary taxable income, with no required minimum distributions.
Total Retirement Assets today$0
Your TSP, your other accounts and your federal spouse's TSP as entered today, before any growth: not a balance at retirement.