塞考斯基HH-53「超級快樂綠巨人」(Super Jolly Green Giant)或MH-53J「低空鋪路者」(Pave Low)是一種美國空軍用的CH-53直升機發展版,專門加強戰鬥搜索與救援能力(CSAR)最初預計替換HH-3快樂綠巨人(S-61R)。之後所有HH-53又都被升級成MH-53低空鋪路者系列。
Foam has been successfully used for nine months in the tanks of HH-3E helicopters and other aircraft operating in Viet Nam, the Air Force disclosed, and the Federal Aviation Administration is now ...