page 51 17 interplanetary phenomanon unit summary , intelligence assessment , part 7 on page 4 , at : http : //www.majesticdocuments.com/ pdf/ipu_report.pdf 18 interplanetary phenomanon unit summary , intelligence assessment , part 8 on page 4 , at : http : //www.majesticdocuments.com/ pdf/ipu_report.pdf 19 interplanetary phenomanon unit summary , intelligence assessment , part 9 on page 5 , at : http : //www.majesticdocuments.com/ pdf/ipu_report.pdf 20 the roswell incident , by charles berlitz and william moore , grossett & dunlap , new york , 1980 , witnesses speak - the town remembers , page 70 chapter 3 crisis management ref .