This right here, is what happened.?
Admittedly I didn't clicking on the video, but he was chased down and arrested on state charges of being in a stolen vehicle and then a felon in possession. State didn't tack on GFSZA charges and couldn't Either it was Baltimore city charges (100yds I thought though) or the feds also charged him separately. Just cause you are arrested by the state doesn't mean the feds won't decide to charge too.
This is generally the case.I am sure there are some cases where local/state LEO arrest someone on a GFSZA charge with NO other crimes apparent. But my general awareness is the vast majority of GFSZA charges are because someone got busted for something else and happen to be armed and within 1000ft of a school so the feds drop some charges on them too.