acceptable risk for el salvador native greg hi dauld goe who says what japan needs now is for international businesses to invest in japan's economy, not run from it. >> i don't want to be part of the problem, i want to be part of the solution, that's why i stay. >> reporter: even the ones who stay notice the new tokyo is a little different. >> five people have left, and i only know one that is not coming back. >> reporter: an adjustment in progress for a country and its international residents. can d young law, cnn, tokyo. >> also in japan, protestors marched against nuclear energy today in tokyo. they're concerned about the long-term effects of radiation. tokyo electric struggling to cool down three damaged nuclear reactors. radiation has been a source of growing concern. japan is getting help from two massive pumps being sent from the u.s. >> well, the goal for them is to