[2] This type of information sharing can create large ineffectiveness as coordination can be weak, leading to a variety of inefficiencies and delays particularly with daily communication across governmental bodies.
For example, as part of the Operation Quicksilver deception plan during World War II, dummy communications were generated for the fictitious First United States Army Group (FUSAG), ostensibly commanded by George Patton, in order to convince the Germans that the main attack would come at the Pas-de-Calais, rather than the real target of Normandy.
Dummy equipment was positioned in the places consistent with the communications, and a very few German high-altitude photographic aircraft brought back evidence apparently confirming IMINT.
For example, numerous articles and books have subsequently appeared to detail how conflicts between the Bush administration and the intelligence community marred the reporting on Iraq’s weapons.
[4] Some believe that one reason that "warning signs" of the terrorists attacks on September 11, 2001 were not acted upon effectively was a longstanding compartmentalization and duplication of intelligence gathering and sharing at the federal, state, and local levels.
The 9/11 Commission noted that "lines of operational authority run to the expanding executive departments, and they are guarded for understandable reasons: the DCI commands the CIA’s personnel overseas; the Secretary of Defense will not yield to others in conveying commands to military forces; the Justice Department will not give up the responsibility of deciding whether to seek arrest warrants.
Media analysis and professional analysts from other US government departments subsequently determined that many of the reports originated with dishonest sources or were untrue for other reasons (see Curveball), and the process of vetting would have prevented their reaching decision makers through normal channels.
The report, Accountability Review Board for Benghazi to Examine the Facts and Circumstances Surrounding the Attacks of September 11–12, 2012 [7] was promulgated in declassified status.