 Funding for Here and Now comes from MathWorks, creators of MATLAB and Simulink software, accelerating the pace of engineering and science. Learn more at mathworks.com. From NPR and WBUR Boston, I'm Vipa Fernandes. And I'm Celeste Headley. It's Here and Now. Coming up, former President Trump appeared at the Republican National Convention days after surviving an assassination attempt. If you didn't believe in miracles before Saturday, you better be believing right now.