High Altitude Protective System (HAPS). Hybrid get-me-down system assembled for NASA Dryden Flight Research Center test pilots. Consisted of cut-away anti-G suit with dual bladders (altitude and G), torso counter-pressure garment (Jerkin) and British P/Q type oxygen mask. Breathing pressure to 70 mm Hg at 18 km. Combined effort between DFRC (Barnicki), Edwards AFB (Melvin), RAFIAM (Ernsting), USAFSAM (Morgan), and David Clark Company.