* Helicopter Rope Suspension Technique – Wikipedia

* Helicopter Rope Suspension Technique

[edit] References

1. ? [1]

2. ? FMFM 7-40 Helicopter Rope Suspension Training (HRST) Operations

3. ? Bruce F. Meyers, Fortune Favors the Brave: The Story of First Force Recon, (Annapolis, MD: Naval Institute Press, 2000).

via Special Patrol Insertion/Extraction – Wikipedia.

s