Flight IR744 -- a round-trip flight from Caracas to Tehran with a stop in Damascus -- was listed as a regular flight, there was no way that anyone could buy a ticket and travel without being vetted by the Venezuelan or Iranian government; Western intelligence service suspected the flight was used to carry illicit weapons materials to Iran, while bringing Hamas, Hezbollah, and Iranian operatives to the Western Hemisphere to prepare for a retaliatory strike against the United States if there was an attack on Iran's nuclear facilities;
Boeing's B747 SP, the aircraft used for flight IR744 // Source: dickwalterauto.com
http://homelandsecuritynewswire.com/mysterious-venezuelan-round-trip-terror-flight-iran-canceled