KITV.com is reporting that charges have been dismissed against four men who were part of a shark tour operation in Hawaii. The men were charged with illegally feeding sharks within the 3 miles of shore after federal agents posing as tourists witnessed the men feeding sharks within the 3 mile minimum distance from the shore. The agents reportedly used “top secret” GPS devices to determine that the chumming/feeding had taken place within the restricted area from the shore.

When the men went to trial on Thursday, defense lawyers argued that they needed access to the user manuals and training material for the “top secret” devices in order to properly defend their clients. Prosecutors argued that the devices could not be discussed in court, and federal agents maintained that “materials pertaining to the devices” could not be disclosed, because of security issues. The judge dismissed the case with prejudice.

The charge of illegal shark feeding is a petty misdemeanor and carries a fine of up to $1,000 and 30 days in jail.