Can pneumonia be fatal in people with advanced AIDS?

So my father contracted HIV about 8 or 9 years. He also has hepatitis C and is currently listed for liver transplants . It also has a mouth infection very bad due to years of methamphetamine abuse . Yes , he and I understand he made ​​some bad decisions and are paying dearly for them . He is currently under my care and I'm doing my best to take care of him in those circumstances. MedlinePlus MedlinePlus Anyway , still smokes despite having part of his left lung removed two years ago due to cancer . In recent weeks, we have developed a case of double pneumonia (according to my sister, who is an RN ) and I have fear that it may be on his deathbed . We can not afford hospice because we let her insurance lapse about a month ago . Just ran out of funds . MedlinePlus MedlinePlus Anyway , I fear that may be in the past . It's pretty weak , could be the straw end pneumonia ? Thank you for your prayers . Thank you.