Of the medical professionals who treated dozens of people after Sunday night's shooting, President Trump said, "It makes you very proud to be an American when you see the job that they've done."
Demolition supervisor John Feal was working at ground zero 16 years ago when an 8,000-pound piece of steel crushed his foot. After being denied medical compensation, he became an advocate for others.
Carfentanil, a potent variation on fentanyl, is being blamed for a wave of opioid overdoses. In Cincinnati, the coroner, crime lab and first responders are struggling to keep up.
Emily is about 4 feet long, weighs 25 pounds and looks like a cylinder wrapped in an orange-red life jacket. First responders in Greece are beginning to use the remote-controlled lifesaving device.
A Texas training site prepares first responders to deal with emergencies like earthquakes and bombings. The facility is now turning to outbreaks like Ebola, and smart machines may play a key role.