I started reading this book within a week after Neil Armstrong died. The length concerned me at first, but I dug in. Author Hansen subjects the reader to tedious detail at times, but this makes for a more complete picture of the man. Reveals Armstrong to have been a thinker who also took decisive action; a brave combat and test pilot who also was a calm engineer. Also reveals him not to have been the recluse he was reputed to be. Very active as professor, head or board member of charitable organizations, civic leader, etc. Just did not make himself very accessible to the media.