Hate to break the news to you, but Indy would be a prime target because of 3 companies. Lilly for their drug making ability, Allison Gas Turbine and Allison Transmmsion as military defense contractors. AGT for jet replacment engines for choppers and jets, AT because I believe they still make the M1A1 Abrhams transmissions.
Not to mention the fact that Indianpolis still ranks as the 12th largest city in the U.S.
Before a majority of Allison was bought by Rolls Royce (thus terminating several of the military contracts), Indianapolis was on the top 10 list of strategic hits in the country. (My mom has worked at plants 5 & 8 since I was 12, so about 20 years? I get jealous when she tells me the Osprey is visiting the plants and she gets to see it.) I'm sure we dropped a couple points when Rolls Royce came in, but not many.