eric manning, the pastor at mother emanuel, sees deeper meaning in polly shepperd's survival. >> she ood in the face of evil and evil backed down. >> reporter: when shepperd finished testifying and left the stand, most of the people in the courtroom stood up out of respect. roof stayed seated. scott, closing arguments are set for tomorrow morning. >> pelley: mark strassmann for us. mark, thank you. this morning in newtown, connecticut, they paused for 15 minutes, exactly four years after the massacre at sandy hook elementary school. 26 people were killed then. 20 of them were first graders. this month sandy hook promise, started by family members, posted a video to turn attention toward the warning signs of a tragedy. here's dr. jon lapook. ♪ got some news today from the radio man ♪ broke the word somber... >> reporter: it seems to be a charming story of young love. >> have a good summer. >> you too. >> reporter: two teens flirting. then... >> oh, my god. >> do you like to write? >> yes, that's what i do. >> reporter: terror. as the scenes are replayed, we realize what we've missed, a

eric manning, the pastor at mother emanuel, sees deeper meaning in polly shepperd's survival. >> she stood in the face of evil and almost, evil backed down. >> reporter: when shepperd finished testifying and left the stand, most of the people in the courtroom stood up out of respect. roof stayed seated. scott, closing arguments are set for tomorrow morning. >> mark strassmann for us. mark, thank you. is >>> this morning in newtown, connecticut, they paused for 15 minutes, exactly four years after the massacre at sandy hook elementary school. 26 people were killed then, 20 of them, first graders. this month sandy hook promise, started by family members, posted a video to turn attention toward the warning signs of a tragedy. here's dr. jon lapook. ♪ got some news today from the radio man ♪ ♪ he spoke the word somber >> reporter: it seems to be a charming story of young love. >> have a good summer. >> you too. >> reporter: two teens flirting. >> hey, you must be bored. >> reporter: but then... >> do you like to write on desks? >> yes, that's what i do. >> reporter: then terror. as the sc