A Marine Corps F-35B Joint Strike Fighter does a short takeoff (STOVL) from Patuxent River Naval Air Station, Md., in 2011. Eighteen years after development began, a version of the plane designed for the Marine Corps is expected to be deemed "combat ready." Cliff Owen/AP hide caption

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Using a digital device that displays Braille characters, Haben Girma talks with President Obama at a White House ceremony marking the 25th anniversary of the Americans with Disabilities Act. White House photo/Courtesy of Haben Girma hide caption

itoggle caption White House photo/Courtesy of Haben Girma

Expectations for movement on justice reform had been high, but sources tell NPR that concrete language on sentencing and criminal justice overhauls is still being hotly debated behind closed doors. David Goldman/AP hide caption

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The Ebola vaccine from a trial in Guinea needs to be kept at a temperature of minus 60 degrees Celsius, the World Health Organization says. Storage devices use jet fuel to keep the right temperature for up to five days in the field. Sean Hawkey/Sean Hawkey hide caption

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Black Lives Matter activists confronted Democratic candidates Martin O'Malley and Bernie Sanders at a Netroots Nation event earlier this month. O'Malley used the phrase "all lives matter" twice, which he later apologized for. Ross D. Franklin/AP hide caption

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Republican presidential hopeful Donald Trump in front of his campaign plane in Laredo, Texas, last week. LM Otero/AP hide caption

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A pedestrian crosses in front of a vehicle as part of a demonstration at Mcity on July 20, on the University of Michigan campus in Ann Arbor, Mich. Paul Sancya/AP hide caption

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Eric Pennucci of Horizon Air Services, a Boston trucking firm, does not like the idea of 18-year-olds behind the wheel of tractor-trailers. Chris Arnold/NPR hide caption

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On Wednesday, Hamilton County prosecutor Joe Deters announced murder and manslaughter charges against University of Cincinnati police Officer Ray Tensing for the traffic stop shooting death of motorist Samuel DuBose. During the press conference, Deters said that "being police officers shouldn't be the role of this university." John Minchillo/AP hide caption

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