No bombs were found on two airplanes that were forced to land in Atlanta after threats on social media prompted a security scare, the FBI said, NBC News reported. NORAD fighter jets escorted the two commercial flights to Hartsfield-Jackson International Airport on Saturday after credible bomb threats were made against them, an airport spokesman said. The flights received bomb threats via Twitter concerning cargo on board. Both Delta 1156 and Southwest 2492 landed safely at the airport around 1:45 p.m. ET, airport spokesman Reese McCranie said. The planes were then evacuated and inspected by bomb squads and canine units.