Congress has launched an investigation of the helicopter crash that killed 30 Americans in Afghanistan, including members of the Navy’s elite SEAL Team 6 unit, The Hill has learned. [WATCH VIDEO] The victims’ families say the Pentagon hasn’t provided answers to their many questions about the deadly attack, which took place on Aug. 6, 2011, three months after Osama bin Laden was killed in Pakistan by Team 6 forces. Rep. Jason Chaffetz (R-Utah), chairman of the House Oversight and Government Reform subcommittee on National Security, told The Hill, “We’re going to dive into this.” Chaffetz said he met with the...