 On 22 October General Abrams, COMUSMACV ordered all construction and planning efforts associated with the anti-infiltration effort halted.Under the new plan, referred to as "Duel Blade", allied forces, supported by air, artillery, and naval gunfire, would maintain a mobile posture and actively resist infiltration from the North by maintaining a comprehensive surveillance effort.While ground reconnaissance would be a part of the effort, attended and unattended detection devices or sensors would provide a majority of the surveillance capability.