As the U.S. military and State Department rush to evacuate American citizens and Afghan allies from Kabul’s airport, Taliban checkpoints are cutting off many from freedom and safety – and reports on the ground indicate the militants are summarily executing people who helped U.S. forces over the years. Ryan Rogers, a retired Marine sergeant, told Fox News Thursday that the interpreter he worked with during the bloody 2010 battle of Marjah in Helmand province is currently trapped in Kabul, prevented from reaching the airport as Taliban fighters seek out and murder former Afghan commandoes and interpreters. "He told me yesterday...