A 1994, biyar unnamed farar hula kwangila da gwauraye na kwangila Walter Kasza da kuma Robert Frost kai kara da USAF da kuma Amurka muhalli Kariya Agency. Su kwat da wando, a cikin abin da suka kasance wakilta da George Washington University doka farfesa Jonathan Turley, zargin da suka kasance ba a lokacin da manyan yawa na ba a sani ba sunadarai da aka ƙone a bude pits da trenches a Groom. Biopsies dauka daga gunaguni da aka bincikar da Rutgers University biochemists, wanda ya sami high matakan dioxin, dibenzofuran, da trichloroethylene a cikin jiki mai. The gunaguni da'awar da suka yi fama da fata, hanta, da kuma na numfashi raunin saboda su aiki a Groom, da kuma cewa wannan ya taimaka wa mutuwar Kasza da Frost.
Farfesa a fannin shari'a a Jami'ar George Washington Jonathan Turley