This got me double checking myself, but it does seem that a typical "common versus rare" threshold is a rate of 5%, though other values like 1% and 10% are some

This got me double checking myself, but it does seem that a typical "common versus rare" threshold is a rate of 5%, though other values like 1% and 10% are sometimes used. Based on this, I'll concede that it might be common for an incident to make the daily news (if there's one a week, so 1/7 chance) but I stand by my claim that trips with such incidents are extremely uncommon relative to all trips.