SUSAN HEAVEY  A mounting U.S. death toll has tempered enthusiasm about a coming COVID-19 vaccine with 9/11-like fatalities projected every day for the months ahead, even with a rapid rollout of inoculations, which could start as soon as Monday. Another 2,902 U.S. deaths were reported on Thursday, a day after a record 3,253 people died, a pace projected to continue for the next two to three months until the vaccine can be widely distributed. Those daily tolls are roughly equivalent to the 2,996 killed in the attacks of Sept. 11, 2001, and greater than the 2,403 killed in the 1941…