Tech. Sgt. Mathew Macella, the 56th Rescue Squadron pararescueman blue team NCO in charge, succinctly summed up the explanation for all the stickers of green feet found around Royal Air Force Lakenheath and what they mean for the 56th RQS. The origin of the green feet symbol came from Vietnam, when the HH-3E helicopter, also known as the Jolly Green Giant, would land in the rice patties and grass fields, leaving huge impressions that looked like giant green footprints.