LOH - Light Observation Helicopter. Pronounced and sometimes spelled Loach. Affectionately called the Flying Egg, because of it's egg like shape. Initially fielded in Viet Nam in early 1968, the Hughes OH-6A was used for command and control, observation, target acquisition, and reconnaissance. It was quite effective when teamed with the AH-1G Cobra attack helicopter as part of  Hunter Killer Teams. The OH-6A, LOH would find targets by flying low, "trolling for fire", then marking the target with colored smoke for the Cobra, attack helicopter to strike. The Cayuse could take a lot of small arms fire and still bring the crew home safely. The OH-6A could be armed with the  six-barrel 7.62mm minigun or a 40mm grenade launcher.