WEAR-TV via APDEVELOPINGSaudi national identified as gunman who killed 3 at Pensacola naval baseWATCH: 'It was chaos': Witness describes scene outside Pensacola Naval Air StationWATCH: Security analyst breaks down firearms access, security on military bases
Bridget Bennett / AFP - Getty Images filePoliticsButtigieg calls on McKinsey consulting firm to release his past client listWarren goes after Buttigieg in change of tacticsJoe Biden's eventful week leaves him looking more durable than before
Daniel Knighton / Getty ImagesKids' HealthAnti-vaccine groups take dangerous online harassment into the real worldGlobal measles cases surge amid stagnating vaccinations
Patrick T. Fallon / Bloomberg via Getty Images filetechUber unmasks its sexual assault problem, reveals thousands of abuse reports a year
Ian Forsyth / for NBC NewsBrexit Britain's Labour Party risks losing its 'Red Wall' industrial heartlands
Paras Griffin / Getty Images fileOpinionT.I., virginity checks and the perils of patriarchal fatherhood
Karen Bean / Field MuseumEnvironmentSmaller bodies, wider wings: Birds are changing, and scientists see the echo of climate change
AFP - Getty Images fileWorldU.S. says Iran may have killed up to 1,000 protestersOpinionIran protests show the regime isn't safe from the wrath of its people
Courtesy of Art BaselA-peeling art?Banana duct-taped to wall sells for $120k at art show in Miami Beach
John Lamparski / Getty Images fileOUT Pop CultureFrom sideshows to Showtime: Actor Theo Germaine is ready for the next act
Elaine Cromie / for NBC NewsDo No HarmHundreds of parents say kids wrongly taken from them after doctors misdiagnosed abuseFULL SERIES: Read more from NBC News’ Do No Harm investigation
Meredith Miotke / for NBC Newsdelivery 'chaos'Inside Amazon's 'last-mile,' speed at the expense of security and safety
Valerie Bischoff / for NBC NewsU.S. newsSome nursing homes are illegally evicting elderly and disabled residents who can't afford to pay
SARAH RICE / for NBC NewsSarah Rice / for NBC Newsspecial reportTrump's trade war squeezes the juice out of Maine's wild blueberry business