Two pilots are celebrating after making a historic, record-breaking transpacific flight in a helium-filled balloon. 

The grueling adventure took American Troy Bradley and Russian Leonid Tiukhtyaev 137 hours to complete, setting a new world record for the amount of time spent in the air. The pair also shattered the 5,209 miles record set in 1981 by traveling 7,000 miles from Japan to Mexico. 

Bill Hemmer spoke with the Two Eagles balloon pilots on "America's Newsroom" today, where they shared that it was a very challenging flight.   

"Well, the fear is real because you're traversing a very a large ocean and there's dangers involved," Bradley, who is from New Mexico, said. "However, we mitigated a lot of those risks by the preparations involved. The balloon was built to survive going through any weather. Also, if we were to land at sea, the capsule does float."

Bradley noted that they waited for the right weather pattern for three weeks in Japan before they launched. He remarked that their flight was unique compared to the other long-distance flights in balloons. 

"As a matter of fact, it's already been done with the around the world with Steve Fossett..." Bradley stated. "The difference between that flight and our flight, is we're going the old school way...just a gas balloon and sandbags. There's no artificial heat."

Watch the video above to hear more from the pilots on "America's Newsroom."