Final answer:
In 1948, the outlaws from the POBOBs formed the 'Hells Angels' in San Bernardino County, a name with origins in World War II aviation units.
Step-by-step explanation:
In 1948, in San Bernardino County, dedicated outlaws from the POBOBs formed the Hells Angels, a name favored by fighter pilots and bomber crews in World War II. The name 'Hells Angels' was indeed inspired by military aviation units, who often painted fearsome and protective insignias on their aircraft to bolster morale and intimidate the enemy. Notable examples include the use of the term by American bomber crews, such as those flying the B-29 "Super-fortress", who faced immense challenges during the war, including being targeted by advanced German fighter planes until the advent of long-range escort fighters. The sense of brotherhood and rebellion that permeated the military groups who adopted this moniker resonated with the biker outlaws, who also sought to forge their own identity and community, apart from mainstream society.