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Hypersonic sled travels at 6,599 mph mach 8. 6 at holloman air force base, aftc, airforcetestcenter, airforce, adinexplorata, fast, hypersonic, sled, hungarian, magyar, american, usa, russian, russa, fsztudja, gecigyors, speed, 6, 699, ezf'aj, science technology.
