Please hide children’s faces prior to the publication EXCLUSIVE. Britney Spears and boyfriend Jason Trawick look very happy while posing for pictures while standing on a cliff in the Grand Canyon National Park, AZ, USA on April 03, 2011. The two took the boys, Sean Preston and Jayden James for a helicopter tour of the amazing natural wonder. They also spent some time in Las Vegas, where they got to meet some dolphins and learn about them. Sean and Jayden love dolphins, so the trainer made it possible for them to pet and pose for a closeup picture of them all. Photo by GSI/ABACAPRESS.COM