WASHINGTON, July 5, 2007 – They take on military assignments impossible for humans, and even robots, to perform. They are rewarded with fresh food, protection from predators and loving human contact. These unheralded, unknown, and often misunderstood marine mammals are saving countless lives during their underwater missions. Now, a new edition of the Pentagon Channel’s monthly documentary, “Recon,” offers a rare glimpse at the work of dolphins and sea lions who are acting as true “Sentinels of the Sea.” “When people mention the marine mammal program, a lot of people think of Flipper,” said Mike Rothe, biosciences division manager...