Pima Air & Space museum:
adjacent to DM Air Force Base
Titan Missile Museum:
This preserved Titan II missile site,
officially known as complex 571-7,
is all that remains of the 54 Titan II missile sites
that were on alert across the United States from 1963 to 1987.
the Titan II was capable of delivering a 9-megaton nuclear warhead
to targets more than 6300 miles (10,000 km) away in about 30 minutes.