The Federal Emergency Management Agency (FEMA) created the Task Force concept to provide support for large scale disasters in the United States.
[2] The canine rescuers are a critical element of each US&R Task Force as their keen sense of smell allows them to locate victims that might go undiscovered.
To keep the canines engaged after long hours of working, one of the Task Force members will hide in the rubble so the dog will have a successful 'find'.
However, on large, unstable debris piles dogs typically do not wear booties or other protective equipment as they need to be able to splay their paws to obtain maximum traction and maintain balance.
Harnesses, collars and other equipment can also pose a serious risk to the dog while working if they were to become snagged on steel rebar or other items contained within a disaster site.
[3] Because of the distinct possibility of injury from broken glass and metal, the medical unit maintains supplies for the canine rescuers.
This advanced certification process evaluates the ability of the canine and handler to locate an unknown number of buried subjects in multiple rubble piles in a limited period of time.
The State Department and the Office of Foreign Disaster Aid requested the help of these teams to assist with rescue operations in the 1985 Mexico City, the 1990 Luzon and the 1989 Leninakan earthquakes.
After the 1989 Loma Prieta earthquake, seeing the value in having a network of such teams in the United States, FEMA created the National Urban Search and Rescue (US&R) Response System that same year.
The U.S. Army's 911th Engineer Company, modeled on a FEMA USAR Task Force, provides additional response to the National Capital Region.
[2] Items included in the medical cache are medicines, intravenous fluids, blankets, suture sets, airways, tracheal tubes, defibrillators, burn treatment supplies, bone saws and scalpels.
Technical search tools include telescopic cameras with heat detecting sensors and seismic listening devices (Delsar).