In a symbolic nod to normalcy, US Vice President Mike Pence delivered a commencement address to the US Air Force Academy's 2020 graduating class on Saturday, telling the cadets that by setting off on their mission to defend the nation they "inspire confidence that we will prevail against the invisible enemy in our time as well." Pence's trip, only his second outside Washington in the last six weeks, was aimed at showing that the country is on course to gradually reopening after weeks of the coronavirus shutdown.