Simple Guide to Conducting Ground Search and Rescue Detection Experiments: Volume II, Appendixes [open pdf - 5MB]
"Ground search and rescue uses a wide vary of resources. Some resources primarily find and collect investigative information and it would be difficult or inappropriate to apply effective sweep width theory. Therefore man-trackers, investigators, and tracking/trailing dogs are resources that do not require sweep width experiments. Several other common resources involve humans using visual sighting except the human sensor is located on some type of moving platform. Experiments to determine their effective sweep width values involve only minor modifications to these outlines. Finally experiments using air resources and air-scent dogs require some more extensive modifications and will only be outlined briefly."
United States. Coast Guard: http://www.uscg.mil/