The Providence Forge Volunteer Rescue Squad has had a Trimble Transpak GPS receiver in an ALS Ambulance since February 1992. The service has used the GPS receiver to guide medical helicopters to accident sites. This is particularly important in rural areas where visual navigation landmarks are sparse and terrain is featureless. The GPS receiver carried in the PFVRS ambulance was used for this purpose in March 1992, allowing the Medflight helicopter to navigate to a remote site on the Chickahominy River to pick up a drowning victim. In April 1992, a patient who had sustained a severe head wound in a boat collision was picked up from a remote fishing camp.Russel S. Hummel III Clarke, Alex M. and Gervin, Alfred S. "Global Positioning System: New Directions in Ground/Air Communications"
(Source unknown - JEMS Communications?) (1993)