LAS VEGAS, NV - SEPTEMBER 07: The PRODRONE PD4-AW waterproof drone is displayed at InterDrone, an international drone conference and exposition for commercial drones, at the Paris Las Vegas on September 7, 2016 in Las Vegas, Nevada. The unit can fly in most weather conditions and can make water surface landings and takeoffs. An optional sonar attachment can be added to help fishermen see fish from above. The conference runs through September 9 and is expected to feature 160 exhibitors showing off their latest products and services to more than 4,000 attendees. The Federal Aviation Administration's Part 107 regulations to operate small unmanned aircraft systems (sUAS) or drones, went into effect in August allowing operators of commercial drones weighing more than .55 pounds and less than 55 pounds to obtain a remote pilot certificate after passing a FAA knowledge exam. (Photo by Ethan Miller/Getty Images)

WASHINGTON, DC - SEPTEMBER 07: The grounds crew puts the tarp on the field before the game between the Washington Nationals and the Atlanta Braves at Nationals Park on September 7, 2016 in Washington, DC. The start of the game has been delayed for weather. (Photo by Greg Fiume/Getty Images)

A member of a fire fighting brigade stands on a burnt area during a fire in A Illa, a village next to Entrimo, northwestern Spain, on September 7, 2016. Thousands of firefighters in Spain and Portugal were Wednesday battling blazes that threatened locals and tourists, as authorities hoped that the arrival of cooler weather would help tame the flames. / AFP PHOTO / MIGUEL RIOPAMIGUEL RIOPA/AFP/Getty Images

A villager tries to extinguish a fire with a garden hose in A Illa, a village next to Entrimo, northwestern Spain, on September 7, 2016. Thousands of firefighters in Spain and Portugal were Wednesday battling blazes that threatened locals and tourists, as authorities hoped that the arrival of cooler weather would help tame the flames. / AFP PHOTO / MIGUEL RIOPAMIGUEL RIOPA/AFP/Getty Images

A villager tries to extinguish a fire using a bucket of water in A Illa, a village next to Entrimo, northwestern Spain, on September 7, 2016. Thousands of firefighters in Spain and Portugal were Wednesday battling blazes that threatened locals and tourists, as authorities hoped that the arrival of cooler weather would help tame the flames. / AFP PHOTO / MIGUEL RIOPAMIGUEL RIOPA/AFP/Getty Images

The remains of a grainery smolder after the passing of a forest fire in A Illa, a village next to Entrimo, northwestern Spain on September 7, 2016. Thousands of firefighters in Spain and Portugal were Wednesday battling blazes that threatened locals and tourists, as authorities hoped that the arrival of cooler weather would help tame the flames. / AFP PHOTO / MIGUEL RIOPAMIGUEL RIOPA/AFP/Getty Images

A villager tries to extinguish a fire using a bucket of water in A Illa, a village next to Entrimo, northwestern Spain, on September 7, 2016. Thousands of firefighters in Spain and Portugal were Wednesday battling blazes that threatened locals and tourists, as authorities hoped that the arrival of cooler weather would help tame the flames. / AFP PHOTO / MIGUEL RIOPAMIGUEL RIOPA/AFP/Getty Images

A member of a fire fighting Brigade crouches while working during a fire in A Illa, a village next to Entrimo, northwestern Spain, on September 7, 2016. Thousands of firefighters in Spain and Portugal were Wednesday battling blazes that threatened locals and tourists, as authorities hoped that the arrival of cooler weather would help tame the flames. / AFP PHOTO / MIGUEL RIOPAMIGUEL RIOPA/AFP/Getty Images