Fall of Lang Vei

Added extra vehicles
USA team have UH1 Attack choper + Cobra, A1 Skyrader
2 Quads on USA main bases
If main will be captured USA have box spawned near by base

NVA have Ka-25 and Mi8 that now can be spawn like Mi8 Cargo

Other extra vehicles: ontos, patton, bm21sam, pt76,nancy, t55