CEDAR RAPIDS — Last month a federal judge dismissed charges against a Cedar Rapids man who was accused of interfering with radio transmissions for train operations, which will allow the man to enter a pretrial diversion program.Randy W. Thompson, 56, charged with interfering with dispatchers or other people while they were involved in railroad operationslast year, will now be under the supervision of the probation office for a period of time and subject to various conditions, similar to probation.Assistant U.S.