The Transportation Security Administration says the studies are safe . `` I think that 's valid , and we put that criticism ( in the paper ) . The measured dose is ` ` comparable '' to one minute of exposure to cosmic rays . A critic complains the study was based on TSA data instead of independent studies .
The Transportation Security Administration says the studies are safe . The measured dose is ` ` comparable '' to one minute of exposure to cosmic rays . A critic complains the study was based on TSA data instead of independent studies .