A search and rescue exercise begins in Yellowknife today.

A Royal Canadian Air Force squadron, out of Winnipeg, will test its search and rescue team's ability to conduct a major search far away from home.

An Alaska Air National Guard pararescueman jumps out of a Hercules airplane during a joint rescue deployment exercise held north of Anchorage on Thursday, June 23, 2011. A similar exercise with the Royal Canadian Air Force gets underway today near Yellowknife, N.W.T.An Alaska Air National Guard pararescueman jumps out of a Hercules airplane during a joint rescue deployment exercise held north of Anchorage on Thursday, June 23, 2011. A similar exercise with the Royal Canadian Air Force gets underway today near Yellowknife, N.W.T. (Associated Press/U.S. Coast Guard/David Mosley)

Major searches take place when first attempts by local search and rescue organizations to find a missing aircraft, vessel or person are unsuccessful.

This week, flying crews will practice spotting people and dropping survival packs from the air, while para-rescue jumpers will parachute into waters and remote areas. They will also test their medical skills.

Other groups who will take part in the exercise are CASARA (Civil Air Search and Rescue Association) members from the N.W.T., Alberta and Saskatchewan, as well as the Canadian Coast Guard Auxiliary and the RCMP. Members of out of the United States Air Force Reserve from Florida will also participate.

The annual exercise continues until Wednesday in Yellowknife.