 There were many comparisons (by the media, Americans military and political officials, and the North Vietnamese) to the possibility of PAVN staging a repeat of its victory at Dien Bien Phu, but the differences outweighed the similarities in any comparison.MACV used this opportunity to field its latest technology against the North Vietnamese.A sensor-driven, anti-infiltration system known as Operation Igloo White was in the process of being field tested in Laos as the siege of Khe Sanh began.