Subsequent to the September 2001 terrorist attacks, the Florida Legislature required the Department of Agriculture and Consumer Services to adopt rules increasing security over agricultural and mosquito control aircraft and the chemicals stored for application by these aircraft. Some agricultural applicators reported they experienced no new costs as a result of these requirements, while some reported costs up to $3,000 for fences, sheds, and aircraft locks. Most mosquito control applicators reported that they meet requirements with existing security.