The Jupiter 2 Can Hover Like A Helicopter  

With gunship modifications was the UH-1B. The UH-1C was developed to be an improvement on the Uh-1B gunship. Further modifications continued until the gunship variant was no longer viable as an escort due to the drag and weight of the gunship modifications, as it slowed down the gunship and prevented it from keeping up with the formations it was supposed to protect. Thus the Huey Cobra Gunship.