Sen. John McCainJohn Sidney McCainRubio asks Army to kick out West Point grad with pro-communist posts The VA's woes cannot be pinned on any singular administration Overnight Defense: Mattis offers support for Iran deal | McCain blocks nominees over Afghanistan strategy | Trump, Tillerson spilt raises new questions about N. Korea policy MORE's (R-Ariz.) latest TV ad highlights his criticism of Sen. Hillary Rodham Clinton (D-N.Y.) and the proposed Woodstock concert museum in the Oct. 21 GOP presidential debate.

McCain says of Woodstock: "I wasn't there -- I'm sure it was a cultural and pharmaceutical event. I was tied up at the time."

The ad uses footage of the debate, Woodstock fans, and McCain in a POW camp; it also includes a clip of The Doors' "Light My Fire."