hospital. we do not know the full status there. governor abbott of texas says the shooter who is also dead was an 18-year-old male who attended the local high school. officials believe he acted alone and had a handgun and possibly a rifle. there is so much we do not know tonight, we do know, though, it is the worst school shooting in the united states since 17 people died at marjorie douglas high school in parkland florida in 2018. i said it s a small town, it is, about 16,000 people live there in the southern part of the state, about 85 miles west of san antonio. moments ago, president biden arrived back at joint base andrews. he is headed to the white house. administration officials say he has been briefed and will address the nation in the next hour. we expect vice-president to address the president this hour. cnn s ed lavandera outfront tonight in dallas, texas and ed, as i said, there is so much we do not know and obviously so much we will never understand, but what ar