In the style of Bravo Zulu, Charlie Foxtrot, and Lima Charlie There is also Sierra Hotel. Sierra Hotel is the phonetic alphabet words for the letters 'S' and 'H'

Sierra Hotel is high praise for a military pilot. It is a slightly more polite way of saying "Shit Hot."

"Direct hit Shadow 99, Sierra Hotel!"

Originally military slang but it's crept into widespread use among pilots who, almost universally, want to sound like a fighter pilot.