Circular patch with F-18 jet, "WHIFFLE TREES" text, and a graph on a blue background.

military patch 4" in diameter with a background using RGB 31, 73, 125 and a border using RGB 37, 53, 70. The background shows fatigue striations and benchmarks radiating from an origin in the lower left corner in RGB 168, 175, 183. There is a picture of an F18 in the middle in RGB 37, 53, 70. In the upper left corner there's a schematic of a Full Scale Fatigue Test showing pads and whiffle trees. In the lower left corner there's an S-n life curve plot also in RGB 37, 53, 70. See more