President Bush and first lady Laura Bush greet Pope Benedict XVI as he arrives at Andrews Air Force Base, Md. (AP Photo/Gerald Herbert)

Pope Benedict XVI arrived at Andrews Air Force Base in Maryland at about 4:11 p.m. for his first papal visit to the United States. President Bush greeted the pontiff on a red carpet on the tarmac in front of thousands of people who gathered to catch a glimpse of the Catholic leader.

While still on his plane, “Shepherd One,” Benedict told members of the press that he is “deeply ashamed” of the Catholic church’s clergy sexual abuse scandal.

Remember, tomorrow’s first popemobile ride and viewing along Pennsylvania Ave. is scheduled to begin outside the White House at noon, and travel past Washington Circle before heading north on Rock Creek Parkway. Later in the day, at 5:15 p.m., he’ll also travel by popemobile from the United States Conference of Catholic Bishops headquarters at 3211 Fourth St. NE along Fourth St. to the Basilica of the National Shrine of the Immaculate Conception. You can expect traffic shenanigans all day long.