I took a gentleman up yesterday that flew A-4's during Vietnam for the Marines. When we finished the flight he gave me a small glass container with plastic grass like would be used in an Easter basket with a nickel in it. He then said "Throw a nickel in the grass, save a fighter pilot's ass. That will keep you safe." I've looked up the phrase and have found song lyrics, but beyond that no real explanation on AW or the internet. Does anyone have background on this? Is it a tradition? Thanks.