<P> Chicago Med follows the doctors and nurses of Gaffney Chicago Medical Center . The Chicago Fire episode "I Am the Apocalypse" serves as the backdoor pilot . </P> <P> Chicago Justice follows the prosecutors and investigators at the Cook County State's Attorney's Office . The Chicago P.D. episode "Justice" serves as the backdoor pilot . The series was canceled after one season . </P> <Table> <Tr> <Th> Series </Th> <Th> Years </Th> <Th_colspan="7"> Television seasons </Th> </Tr> <Tr> <Th> 2012--13 </Th> <Th> 2013--14 </Th> <Th> 2014--15 </Th> <Th> 2015--16 </Th> <Th> 2016--17 </Th> <Th> 2017--18 </Th> <Th> 2018--19 </Th> </Tr> <Tr> <Td> Chicago Fire </Td> <Td> 2012--present </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 5 </Td> <Td> 6 </Td> <Td> 7 </Td> </Tr> <Tr> <Td> Chicago P.D. </Td> <Td> 2014--present </Td> <Td> Pilot </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 5 </Td> <Td> 6 </Td> </Tr> <Tr> <Td> Chicago Med </Td> <Td> 2015--present </Td> <Td_colspan="2"> </Td> <Td> Pilot </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Chicago Justice </Td> <Td> 2017 </Td> <Td_colspan="3"> </Td> <Td> Pilot </Td> <Td> </Td> <Td_colspan="2"> </Td> </Tr> </Table> <Tr> <Th> Series </Th> <Th> Years </Th> <Th_colspan="7"> Television seasons </Th> </Tr>

What airs first chicago med fire or pd