U.S. Sen. Roger Marshall, R-Kansas, takes part in a briefing by an air ambulance crew before a flight from Newman Regional Health in Emporia. He was told Medicare reimbursement rates should be increased to better support aviation resources used to care for rural Kansans. (Tim Carpenter/Kansas Reflector)EMPORIA — U.S. Sen. Roger Marshall squeezed into the back seat of the helicopter, adjusted a headset so he could communicate with the pilot and n…