No. If you feel YOUR life, or a family member, is in danger and you don't think YOU can safely retreat, once you've run through the check list, you can start thinking about presenting and, then, if things haven't improved, you can start to think about whether or not shooting is going to keep you from serious harm or death.
Technically, if GURPS is pretty clearly gonna shoot me and you are a bystander and ccw, you can't shoot to save me. Some might say it's OK to join in and shoot me but that's another question. Point is that in Maryland, legally, you're putting yourself in the hands of the jury if you help a stranger and/or draw 'too soon' or shoot 'too soon'