pulitzer prize winning columnist and associate editor of "the washington post" and msnbc contributor mike barnicle and white house editor for "politico" sam sign. that was gene robinson, there's mike barnicle and sam sign with us as well. good morning to you all. we are following a couple of important threads this morning in america's fight against the pandemic. they both concern vaccinations. nbc's gabe gutierrez reports, but first miguel almaguer in the battle over boosters. >> reporter: divided over the science before the fda is set to vote on the future of boosters, members of the agency are boasting support and opposition over a third dose of the pfizer vaccine with the stage set for a controversial decision, pfizer says their data shows booster shots needed six months after the second dose as protection from infection begins to wane.