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Department of Health and Human Services

It's a lesson you learn as early as grade school: If you find yourself injured, threatened or otherwise in harm's way, just break out your phone and dial a simple, three-digit number: 911. After more than five decades, the 911 emergency call system has become so memorable and ubiquitously known, it even has its own network TV adaptation.

But what if the danger is rooted less in the physical, and more in one's mental health?

The Trump administration continues to detain unaccompanied minors for indefinite periods in unlicensed and military-style facilities in violation of a decades-old legal settlement governing the treatment of immigrant children, according to court documents filed Friday in California.

Updated at 4:37 p.m. ET

The American opioid crisis is far from over, but early data indicate the number of deaths are beginning to level off, according to Alex Azar, secretary of the U.S. Department of Health and Human Services, citing "encouraging" results in overdose trends.

In a speech on Tuesday at a Milken Institute health summit, Azar walked through statistics suggesting deaths were plateauing and he highlighted efforts he says may be turning the tide in the drug epidemic.

Updated at 12:13 p.m. ET

The Pentagon will build tent camps at two U.S. military bases to house people who cross the southern border illegally, Defense Secretary Jim Mattis said Monday.

The defense chief did not give details about which bases would contain the temporary camps. However, NPR's Tom Bowman reports that the two military bases are in Texas.