This also depends on the country. We have in France a heightened level of terrorist attacks (plan vigipirate). This is in place for two years now and gradually

This also depends on the country. We have in France a heightened level of terrorist attacks (plan vigipirate). This is in place for two years now and gradually everybody starts to ignore it because the authorities did not lower it. It started on everyday life, then schools were not that protected anymore, then the administration buildings. I actually had to look up whether it is still in place. So you have countries where a long state of alert can turn into tyranny, then you have France where everybody ignores it after some time.