nation and it is within our power to america sure it never does again. reporter: in washington, te gates blocking pennsylvania avenue are finally gone. letting holiday tourists snap superior selfies right against the gate. 67% of adults have had at least one covid-19 vaccination but only 20% have reached the goal of getting at least one shot by today, and many states especially in the south are lagging behind. as america wraps up a weekend of red white and covid-19 break throughs, health expertsseu about large gatherings of unvaccinated people. we ll work with the state and local partners to make sure we do whatever we can to stop the spread of the disease. reporter: president biden took time tonight to memorialize the 600,000 lives lost to the