At 11 a.m, you can watch here live-streaming video of the interfaith service at the Cathedral of the Holy Cross in the South End. President Obama is scheduled speak.
(video LiveStream from PBS NewsHour posted below)
First lady Michelle Obama will attend the service, as will Governor Patrick and Boston Mayor Thomas Menino. Mitt Romney, the 2012 Republican presidential nominee and former governor of Massachusetts, is also expected to attend.
