Helicopter crews departing seafaring Air capacity Atsugi were pioneer particular doses of potassium iodide to help look after their thyroid glands from probable exposure to radiation, Lapan thought. The thyroid is particularly vulnerable to more or less kinds of radiation, and the iodide reduces the hazard of radiation illness.former to Wednesdays missions, the simply air crews so as to had been prearranged potassium iodide were treated once being exposed to radiation, Lapan held, addition so as to after a sailor is prearranged iodide is not an across-the-board document.It was situational, based on the circumstances. They decide based on medicinal personnel who determine whether either then the drug are something they can expend when a precaution, before if they can be present used wearing a deterrent way, Lapan told reporters by the side of the Pentagon.Crews returned Wednesday with veto sign of exposure, according to a spokesman representing the U.