 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 Celeste Headley. I'm Deepa Fernandes. It's Here and Now. Coming up, Trump formally accepts a Republican nomination for president and makes grand promises to Americans. And I will never stop fighting for you, your family, and our magnificent country.