Which statement from the article best supports the idea that the records that were broken in 2015 will be difficult for others to break?
[The pilots] had to slow the balloon for a controlled water landing. "That was the hardest part of the trip," Bradley said.
"[Bradley and Tiukhtyaev made] significant improvements over the existing records," Steve Shope said.
"It's [Troy's] way of [showing respect] to those who came before him by attempting to go after their records."
Tiukhtyaev was asked if he and Bradley were still friends after such a long trip. He said no. "[We're] brothers," said Tiukhtyaev.