"A career can be a long one, exposures accumulate. Based on knowledge of radiation exposure, we have concern that these exposures could be associated with increased risk for cancer or perhaps other problems." Source: Committee chairman Jonathan Samet, professor of epidemiology at the Colorado School of Public Health, commenting after a major scientific report says the United States is falling behind other nations in protecting aviation professionals from this invisible workplace hazard. The findings could influence how occupational health is addressed across commercial aviation.