Dearborn, a suburb of Detroit has the highest percentage of arabs outside of the middle east. MIdad23 is wrong.
http://www.census.gov/prod/2003pubs/c2kbr-23.pdf
Page 7
Well--how close is Dearborn to Detroit?
These terrorists have automobiles, you know. They also take subways and busses to their targets.
What's the diff if they're in Dearborn or downtown Detroit?