Go through this article;

http://www.monitoringtimes.com/html/mtairshows.html

It will give you much more than just frequencies, it will answer your
questions!

NOT ONLY do you need the Aircraft bands VHF and UHF 220 MHz to 400
MHz coverage
as the Monitoring Times article states YOU NEED SELECTABLE mode I.E. AM
and FM.
Because the T Birds are on the 140 MHz military VHF Aircraft band, this
gos above the civilian band from 138 MHZ to 144 MHz, in AM!
This is covered in depth in the article.
Jim

Mike wrote:

I would like to buy a scanner to listen to the Air Force Thunderbirds
perform. What would be the best product to do this?