1. Schools have turned to AI to detect guns and prevent mass shootings, but concerns about reliability and false alarms persist.
2. Critics argue that investing in technology like ZeroEyes diverts money from addressing the human causes of violence.
3. Kansas lawmakers funded ZeroEyes-style tech with $10 million to boost school security efforts.

• NIST scientists have published results establishing a new atomic clock, NIST-F4, as one of the world’s most accurate timekeepers, priming the clock to be recognized as a primary frequency standard — the ultimate source of time.
• The NIST-F4 clock was carefully and painstakingly assembled and tested over the last few years.
• By joining a small group of elite clocks run by a handful of countries, NIST-F4 makes the foundation of global time more stable and secure.