The Frecce Tricolori, officially known as the 313° Gruppo Addestramento Acrobatico, Pattuglia Acrobatica Nazionale Frecce Tricolori, is the aerobatic demonstration team of the Italian Air Force. From Wikipedia
The royal couple met with Italian President Sergio Mattarella and began a series of ceremonial and cultural engagements in Rome, marking a historic visit and their 20th wedding anniversary.