Owing to its northerly position a large part of Ungava is treeless, and belongs to the barren grounds where caribou roam and feed on the socalled caribou moss, a greyish lichen. The caribou, moose, antelope, mountain sheep, beaver, otter and mink are scarce.
Espionage normally is not reconnaissance, because reconnaissance is a military force's operating ahead of its main forces; spies are non-combatants operating behind enemy lines. Often called  recce  (British and Canadian English) or  recon  (American and Australian English), the associated verb is reconnoitre.
force. n. 1. The capacity to do work or cause physical change; energy, strength, or active power: the force of an explosion. 2. a. Power made operative against resistance; exertion: use force in driving a nail. b. The use of physical power or violence to compel or restrain: a confession obtained by force.