( CNN ) F-16 fighter jets escorted two passenger planes into Atlanta 's Hartsfield-Jackson International Airport on Saturday after a bomb threat made on Twitter was deemed credible , according to military officials . Southwest Airlines Flight 2492 and Delta Flight 1156 landed safely at the airport and were searched by bomb disposal units , according to airline officials . Nothing out of the ordinary was found , officials said . One runway was closed temporarily , causing delays for other flights as passengers on the two flights were questioned and their luggage was searched by bomb-sniffing dogs , officials said . Delta spokesman Morgan Durant said , `` It was a Portland , Oregon , to Atlanta , Georgia , flight . Delta is supporting the sweeping process carried out by authorities . '' The Southwest flight was coming from Milwaukee , Wisconsin . The F-16 fighter jets were from McEntire Joint National Guard Base in South Carolina and returned to the base after the passenger planes landed . `` What you see is a very hefty response , '' said CNN Aviation Correspondent Rene Marsh . Due to the current world wide terror threats `` no one wants to take the risk , '' she said . Normal operations returned to Atlanta 's airport after nothing suspicious was discovered during the searches .
Both flights landed safely , nothing out of the ordinary was found on the planes . Two F-16 fighters returned to their base in South Carolina after accompanying the planes to the Atlanta airport .