Although each version of the film asserts that the events of 9/11 were essentially an " inside job " , there were significant revisions between the particular theories that different editions posited . For example : The first edition , '' Loose Change '' , suggested that there was an unusual device ( which the filmmakers refer to as a " pod " ) under the fuselage of the plane that struck the South Tower of the World Trade Center . The " pod " was presented as evidence that the planes involved in the attack were replaced with remote-controlled drones . Another film '' 911 : In Plane Site '' delves into the topic of the commercial airlines being military airlines with " pods " . Official flight records were also presented as evidence that the aircraft involved are still in active service , though it is stated that the producers do not know what happened to the passengers of the flights . This information is omitted from all subsequent versions
the plane
United Airlines Flight 175
Loose Change