U.S. Army Special Forces (Green Berets), U.S. Air Force Pararescue (PJs), and High Altitude Airdrop Mission Support (HAAMS) team conduct High Altitude Low Opening (HALO) and High Altitude High Opening (HAHO) jumps with oxygen masks from extreme altitudes.

0:00 Green Berets
4:42 Pararescue
7:04 HAAMS

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