Intervention strategies can be based on level of risk and/or area of risk. It is helpful to provide the available strategies in the policy. To get more information on the strategies, see the section entitled Interventions.
People are saying flash can run at the speed of light and superman can do it, then others are saying superman flies faster in space. Regardless flash is able to run so fast he can go back in time and he can travel through dimensions because he is so fast regardless.
You can find the extra distance Superman would have to fly using some geometry. If superman is flying 50 meters above the earth, then the difference would be 2 * (r+50) * pi - 2 * r * pi. You can take r out, and the distance becomes 2 * 50 *pi, which is 314 meters. That seems negligible if it's a race around the world, and 50 meters is pretty high.