Sheryl, do you know how many grays of radiation Charles has had so far? My husband had three rounds of radiation in all -- 70 grays, 20 grays and 20 grays -- 70 grays for the initial treatment, the two courses of 20 grays targeted the swollen nodes in his airway. After the initial treatment, each time the RO would say John was using up one of the five "bullets" he had got left. We were advised to consider carefully because it would mean that in an emergency situation, the RO would not be able to treat him with radiation.
For his lung mets, John was treated with chemo. He was in two clinical trials, one course of taxol and carboplatin and two weeks of capcitabine.
John was not given a lung biopsy when they found the lesions because on the CT scan it was very clear that the lesions had the classic appearance of cancer.
I would suggest that you ask the RO how many grays Charles will be getting and also maybe explore the possibility of chemo with your doctor at the CCC.
It is a tough road ahead, so like Christine said, do take care of yourself and your needs.
BTW, for one of his clinical trials, John had to have a lung biopsy. Like the doctor said, it's like poking a hole in a balloon and trying to not let the air out. There is some risk in a lung biopsy -- e.g. the lung could collapse. These are things you might want to take up with your doctors.