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Failures mark week of stunning revelations
FBI was warned that gunman was 'going to explode'
Deputies were outside school when police arrived, sources say
Teacher: I'm supposed to be a gun expert?
Here's Florida governor's plan to keep students safe
This Texas school district already arms its teachers
Bullets flew for 4 minutes as armed deputy waited outside
Analysis: This proves a good guy with a gun doesn't always stop a bad guy with a gun
Officer responded to school shooting knowing son and wife were inside
Meet the Mueller team
What is Adam Schiff's next political move?
The life and career of Robert Mueller
Parkland survivor tells Melania Trump: To combat cyberbullying, start with Trump Jr.
Why the NRA is so powerful on Capitol Hill
For self-driving cars, car washes are a nightmare
How does KFC run out of chicken?
Asia wants some of Trump's infrastructure billions
Community creates cards of love and kindness for Parkland
Teen diagnosed with myocarditis after getting cold
Health official warns of possible measles exposure
Georgia to carry out first execution of year
Teens arrested in connection to school threats
Music gives expressive outlet to NC boy with autism
Woman shot and killed for tax return money
Officers search for contraband inside Maine jail
Accused killer says trial delay is an 'advantage'
Animals recovered from home may be stolen pets
Missouri teen asks best friend with Down Syndrome to prom
Thief steals $6,000 French bulldog from pet store