Just saw this on Fox News: Texas Nuclear Plant on Lockdown.
According to the story, the plant activated a security response (their “Emergency Response Organization”) at 0800 their time this morning, which would have been about an hour ago now. This plant is a nuke weapons assembly and disassembly facility.
More to come as more is known.
Update: Apparently the alarm was sounded because hunters were spotted across a field from the facility. I’m guessing someone saw people in the distance with rifles and hit the alert.