NPR News

Good morning.

Our early posts:

-- Four Headlines From Thursday's GOP Debate.

-- Report: Killings Of U.S., Allied Troops By Afghan Soldiers Is On The Rise.

"Four International Security Assistance Force service members were killed today in eastern Afghanistan by a member of the Afghan National Army," the NATO-led military command in Kabul reports.

While others analyze what Thursday's GOP presidential debate does or doesn't tell us about what may or may not happen Saturday when South Carolina Republicans hold their primary, here's the top news from that four-man clash in Charleston:

The Florida Department of Law Enforcement faced accusations that a breathalyzer was giving inaccurate readings. So it commissioned a study. Fifteen employees consumed more than $300 worth of whiskey, mixers and Doritos, and then used the breathalyzer. Judges are considering whether the study was legitimate.