we certainly have seen pfizer and bojana -- moderna, how both dramatically increased the number of vaccinationoses they say they will be able to deliver this year in 2021. we did hear from pfizer today they are having issues outside the united states that could impact some of those numbers. but that is based on the production they are doing now. we definitely do not have enough in reserve, to meet the demand we have in the united states now. there is some concern about the actual demand level, how many people are going to be willing to get vaccinated, and what about the vaccine hesitancy rates? we have seen a lot of that in health care settings, higher resistance that we had expected. really, when we are talking about getting to herd immunity, needing 70%-80% of people vaccinated or infected. it is likely even taking into account people who are hesitant against the vaccine, if everybody is willing to get it as access to the vaccine, we should be able to get to those numbers by the end of the air. -- year. joe: so there are two issues we have been dealing with, the supply constraints, how many