3 ms·'Up to 15 or 20′ air traffic controllers are retiring daily78 points by geox 1y agogeor9e 1y ago'Up to 15 or 20' is the exact same thing as 'Up to 20'dang 1y agoComments moved to https://news.ycombinator.com/item?id=45860865 https://news.ycombinator.com/item?id=45860865.