Applying for A&A for my veteran father. In Form 21-527EZ, Section III, it asks for veteran's work history ("Must complete")......I can fill in all the blanks (where Dad worked, dates, etc) EXCEPT FOR the blank "Total Annual Earnings." I have absolutely no idea what Dad's salary was. Dad has been retired for 16 years. He has dementia, so I doubt he can tell me. His wife is dead. And I can't find any of his tax returns that go back that far to check it. I don't even know why the VA would need this info in this situation, but I hate to leave it blank because of the "Must Complete" warning on the form. Is it better to put n/a (which isn't really true--I just don't know the amount!) OR make a wild guess (which could be way, way off the mark)?