The US Army trains soldiers for jungle warfare at the 25th Infantry Division's Lightning Academy on the island of Oahu in Hawaii. Insider's chief video correspondent Graham Flanagan spent 12 days ...

Hawaii is mostly known for its paradisiac coastlines ... about 30 minutes and will guide visitors through a wonderland of jungle canopies, natural reserves, cascading waters, and old-cane fields ...

Did they descend from red jungle fowl that Polynesians brought to Hawaii some 1,000 years ago or from farmed birds that flew the coop more recently? According to genetic tests, a mix of both ...