A photograph of two US Army Bell UH Iroquois taken from a third one are in flight over Vietnam The door gunners machine gun is just visible at the forefront In early the Army accepted its first UHH Huey This was the last major Huey upgrade It appeared identical to the UHD but beneath the engine cowling Bell installed the improved Lycoming TL engine At last the Huey had enough power to handle almost any mission in the harsh conditions of Vietnam
