The missing Wisconsin girl, whose parents were murdered earlier this week, is likely in danger, officials said.
The mandatory part of the system allows Donald Trump to send alerts directly to most Americans.
Amber Wagers was last seen getting into a white car on Wednesday.
Police have a suspect in custody.
Kristy Woods says she last saw her daughter when she put her to bed Sunday night.
Sens. Kamala Harris and Dianne Feinstein want answers from the FCC.
Sherin Mathews' dad allegedly took her outside at 3 a.m. as punishment. When he returned she was gone.
Authorities are desperately searching for Shavon Le’Faye Randle.
The girl was 15 years old, making any sexual act statutory rape.
“I think it just hasn’t hit him yet.”