Combat Drivers News Today

Troo troops. here in the united states, one of their elite training facilities is marking its 50th year. its in key west. military members from the united states and other countries train to become combat divers who take on the difficult and dangerous task of navigating missions under water. about one in three students enrolled in the course fails. our steve harigan is at the facility in key west this afternoon. >> reporter: keep in mind, these students to begin with are already rangers or green...