With emotional testimony about their own experiences, parents of children who were killed in the Uvalde school shooting urged a Texas House committee late Tuesday to pass on to the full chamber a bill that would raise the minimum age to purchase certain semi-automatic rifles. Families waited more than 12 hours after the House Select Committee on Community Safety first convened about 9 a.m. to testify about their final memories with some of the 19 children and two teachers who were killed in the May 24 mass shooting at Robb Elementary and how their lives have changed since.