VATICAN CITY (CBS) -- On Friday, Pope Benedict presided over the "rite of imposition of the pallium," a yearly celebration honoring newly appointed Catholic archbishops.
American archbishops Charles Joseph Chaput O.F.M. Cap. of Philadelphia, William Edward Lori of Baltimore, and Samuel Joseph Aquila of Denver received a woolen stole, known as the pallium, as a sign of their communion with the pope.
The ceremony took place in St. Peter's Basilica in Vatican City.
Adding to the historic nature of this event, for the first time in its 500-plus year history, the Pope's personal choir, the Sistine Chapel Choir, sang a single chorus with another choir, the Westminster Abbey Choir, who recently performed at the wedding of Prince William and Kate Middleton.