With the Black Adam movie, Hawkman and Hawkgirl's homebase is now on the DCEU (soon to be DCU I suppose) map. St. Roch was Hawkman's city during the Vol. 4 and Hawkgirl series (2002-2007) and the Black Adam movie brought it back in a big way. The soon-to-be-defunct DCEU has made St. Roch a rather important city, so it could be used in the DCU again in some way. It's been established (for now) that Hawkman has a huge estate outside the city limits, and the estate also serves as the headquarters for the Justice Society. This never happened in the movies but since when do movie writers worry about what's in the comics, right? Amanda Waller and her Belle Reve Penitentiary are located near St. Roch as well, which means the Suicide Squad is also there.
