Book on B-52 crews during Vietnam available for download

FIFTY SHADES OF FRICTION: B-52 Crews, Combat Climate, and the Vietnam War
By Dr, Mark Clodfelter
Available for download as a pdf file at:
http://ndupress.ndu.edu/Portals/68/Documents/casestudies/nwc_casestudy-2.pdf?ver=2016-09-08-103419-693