sentences:  Upon reaching Earth, they were befriended by Midway City police commissioner George Emmett, who established cover identities for them as Carter and Shiera Hall.After capturing Byth and bringing him back to their planet, Katar and Shayera chose to return to study Earth's crimefighting methods, and they fought against evil as the superheroes Hawkman and Hawkgirl.Shayera renamed herself Hawkwoman in the early 1980s.