Rapid City, South Dakota (Reuters) Rapid City Airport’s (RKIA) emergency response team has been overwhelmed with calls after more than 400 people were injured in an explosion and fire at a busy U.S. airport on Thursday, the airport said.
The explosion, which happened at 11:55 a.m. local time (0755 GMT), occurred during a training exercise involving more than a dozen of the airport’s flight attendants, airport spokeswoman Jennifer Eriksson said.
The incident is still under investigation.
The airport is in the midst of upgrading its perimeter fencing, Erikssons spokeswoman said.
There were no immediate reports of injuries or deaths.
The blast occurred in an area called “The Pines,” where the U.s.
National Security Agency (NSA) has a large and secretive facility.RKIV, a U.K.-based firm that has a contract with Rapid City to monitor airport operations, said it received reports of “explosive activity” at the airport, according to a statement.
“We are working with the Rapid City Fire Department and other law enforcement agencies to determine what happened,” said the statement from RKIV.
The FBI and the U,S.
Marshals Service are investigating the incident.