Corrected entry: The military's security is ridiculously inadequate. After Gort subdues the only two GIs guarding him and the spaceship, the military encases Gort in solid material, but later still only two GIs guard him and the spaceship when Patricia Neal arrives. With a development of this magnitude the US military would probably seal off the city.
Watchful
26th Oct 2004
Correction: One of the major themes of the movie is the hubris of government and military powers, who rely more on inertia than on prudent behavior. Yes, even *after* Gort thumps two guards, the response is to encase him in a new untested plastic and then go back to standard procedure, confident that he has been dealt with. The inadequacy of the response is what frustrates Klaatu throughout the film, so in that respect this is not a plot hole but an intentional theme.
Watchful