Uvalde school gunman: What we know so far

Few details have been made public about the 18-year-old gunman in the shooting Tuesday at a Texas elementary school.
Salvador Ramos has been identified as the shooter at Robb Elementary School in Uvalde. He was killed by police officers, according to Texas Gov. Greg Abbott. 21 killed in Texas elementary school shooting; gunman deadHere's what we know about Ramos at this time:Carried a...