Let $U_{1}, U_{2}, U_{3}$ be independent random variables that are each uniformly distributed between zero and one. What is the probability that the second highest value amongst the three lies between $1 / 3$ and $2 / 3?$
- $\frac{2}{9}$
- $\frac{1}{27}$
- $\frac{13}{27}$
- $\frac{1}{3}$
- $\frac{7}{18}$