First responders in the District held a drill on Wednesday in order to prepare for a large-scale terrorist attack.
The scene was an attack during a large rock concert at RFK Stadium called Rock & Roll 2006.
During the simulated rock concert, a "suicide bomber" entered a tunnel below Independence Avenue and detonated a bomb, leaving mass casualties in the mock terror attack.
D.C. fire, police and EMS workers were the first responders on the choreographed scene.
"What we're testing are response techniques, staging techniques and our ability to diagnose and transport as quickly as possible," said Alan Etter, D.C. Fire Department and EMS spokesman.
As emergency medical service teams tended to the injured, police completed bomb sweeps in search of secondary devices. Traffic would also be stopped and the structural integrity of the bridge would be tested.
"A hazardous material unit is here to do air-sampling to make sure no contaminants were released into the air," said Etter.
D.C. emergency workers who also participated in the drill included the Emergency Management Agency, Department of Health and police recruits who posed as the injured.
The drill is designed to help city leaders evaluate how prepared emergency agencies are for a potential future terror attack.
"The event would progress the way a real event would -- people injured in one site, transported to another site. The goal is to practice the kinds of things happening in a real event," said Jo'Ellen Countee of the EMA.
Officials said that had the drill been a real-life situation, the FBI would take over once D.C. police, fire, and EMS workers completed their work.
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