of a mass shooting. this one at an elementary school. in about a half an hour, we expect an update from greg abbott on yesterday s shooting at rob elementary school. police say the shooter, armed with an ar-style rifle and wearing the type of vest tactical teams use, entered the school, barricaded himself in a classroom, and opened fire. police say they eventually had to break windows to evacuate other students and staffers. as investigators continue to piece together what transpired, they re learning more about the suspect himself. they have identified him as 18-year-old uvalde resident. no friend or girlfriend that we can identify. it s hard to identify what caused or sent this individual to, you know, complete this heinous act, this evil act. it shows you pure evilness with this individual going into a school, barricading himself inside a classroom, and shooting children and teachers. meanwhile, in washington flags are flying at half-staff outside the white house the d