An additional NC-123B was utilized as a radio relay plane above the Ho Chi Minh trail, with equipment to read the signals from many sensors on the bottom built to get enemy truck exercise.Ch? c?n ?áp ?ng ???c nh?ng yêu c?u ??n gi?n c?a 123B là b?n s? có c? h?i ???c nh?n quà h?p d?n. Nh?ng ph?n quà là ti?n m?t s? ???c chuy?n th?ng v? tài kho