Religious Travelers - DL/AF kosher meals, ATL

I'm booked LHR-ATL/ATL-LGW on AF/DL code share. I suspect it's DL metal both ways... Unfortunately flying Y. Does anyone know which kosher caterer DL uses, esp out of ATL? Would this one going to be "pack-your-own-pastrami" flight? Also any info on kosher take away convenient to ATL airport would be much appreciated.

I think they use Weiss catering from Brooklyn.

The food is very meager and tastes terrible I would reccomend you bring your own pastrami

thanks. For outbounds, I think I'll book flights with long enough connection to get something from Sarcelles...