The other week I had a random thought on why the FoT PA helmet looks the way it does. When starting the game's first mission, the Brotherhood has been in the area for two years now. Slowly expanding it's sphere of influence and taking in recruits from the region. A lot of them being from tribal villages and what if it's these same tribals that influenced the design of the helm. Skilled tribal recruits who had their repair and science skills enhanced with Brotherhood training. Deciding to give the helmet a horned look for an intimidating effect against raiders, tribals and other wasteland riff raff.