Dolphins will get national exposure in training camp.The Atlanta Falcons and New York Jets declined a chance to star in HBO’s popular, insightful show, “Hard Knocks,” which provides unprecedented insight into an NFL training camp. But the Miami Dolphins, a team struggling for an identity, did not.In its seventh season, this version offers the first time with a rookie coach, Joe Philbin.“It’s a great opportunity to connect with our fans, for the people who aren’t going to be able to come out here daily in 110-degree heat index weather and watch our guys participate in training camp,” Philbin said.HBO Sports president Ken Hershman said in a statement: “We are delighted that ‘Hard Knocks ‘ will be returning this summer and placing the spotlight on the Miami Dolphins, a venerable franchise that had an excited offseason activity. This marks the first time that series has featured a first-year head coach and we are extremely grateful to both coach Philbin and the entire organization for agreeing to participate. As always, there will be plenty on the line for veterans, free agents and rookies.”“Hard Knocks” won three Sports Emmys for its coverage of the New York Jets in 2010. The show made its debut in 2001 with the Baltimore Ravens, and has had the Dallas Cowboys (2002 and ’08), Kansas City Chiefs (2007) and Cincinnati Bengals (2009) as the focus in the past.