The Thunderbirds are currently practicing for the Daytona 500. They have passed over my house several times. They are flying from the Southeast moving to the Northwest towards the Speedway. The only frequency I have found so far is 141.075 (AM mode)
I had two scanners going seraching the MILAIR freqs and that is the only one that has been active so far. There may be others that will be active in the next couple of days. At the Daytona 500 they only do a fly over and do not perform any arial tricks. That may explain why they are only on one frequency.
I see the article was dated February 18th. I was out of town so missed their practice runs. Given the direction they flew in from, I thought maybe they flew up from Patrick AFB. The writer of the article makes note that they were not the vintage Ford cars. I guess he isn't aware that the current Thunderbird autos are retro looking back to the mid 1950s style. I also guess he is too young to know about the Thunderbirds puppets that used to be on TV. "Thunderbirds are go!"