Caption

A police officer inspects a vehicle after a bomb went off near Gulbahar Police Station in Peshawar, Pakistan, April 24, 2015. Tehreek-e-Taliban Pakistan (TTP) have claimed responsibility for the attack. (Asianet-Pakistan / Barcroft Indi via Getty Images)

Caption

A non-licensed private cab driver working with Uber shows a Uber mobile application in Nairobi on February 4, 2016. (SIMON MAINA/AFP/Getty Images)

Caption

Fentanyl Citrate, a CLASS II Controlled Substance as classified by the Drug Enforcement Agency in the secure area of a local hospital, July 10, 2009. (Joe Amon/The Denver Post via Getty Images)

Caption

San Bernardino shooting suspects Syed Rizwan Farook, 28, and wife Tashfeen Malik, 27, in undated mug shots. (FBI Handout)

Caption

Republican presidential candidate Sen. Ted Cruz (R-TX) speaks to supporters during a campaign event on December 4, 2015 in Johnston, Iowa. (Scott Olson/Getty Images)