(WJBK) - A training drill could have you re-routed in Detroit today.
Jefferson Avenue will be closed between Griswold and Washington from 10 a.m. until 4 p.m. for a mock disaster drill.
Detroit first responders will be testing out their tactical capabilities in case of a terrorist attack they hope will never happen.
The practice will test how well federal, state and local partners respond to a potential threat.
If you notice unusual activity on Jefferson near Cobo, it's part of the training exercise.