All of America is feeling the trauma of yet another deadly school shooting - this time in Nashville. Megan Alexander is in Nashville with a moment-by-moment account of how the take down of the shooter happened. And we may never know why this happened…but we know who did it. A 28-year-old who went to the Covenant School as a little girl. She became an artist, recently came out as transgender...and for some reason, carefully planned a deadly shooting. The pastor's daughter, her two classmates, the principal, the custodian and a substitute teacher were all victims of the latest senseless school shooting in America. Three were nine-year-old children - which is prompting parents across the country to post photos of their own little ones with the hashtag "this is nine years old." And the man who's become a hero to anyone who's had to deal with squatters on their property. He says when unauthorized individuals decided to move into his mom's unoccupied house…he turned the tables on them, and very firmly got them to leave.