[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2008/images/10/02/art.sch.ap.jpg caption=" Randy Scheunemann played the part of Joe Biden in Palin's debate prep."]ST. LOUIS, Missouri (CNN) - Sarah Palin's chief foreign policy adviser Randy Scheunemann played the role of Joe Biden in several mock debates this week in Arizona, a campaign official confirmed Thursday.
Palin's camp released a photograph on Tuesday of the vice presidential candidate debating Scheunemann in one of those trial runs, but it was unclear if any more of Palin's many advisers had stood in for Biden during the prep sessions. The use of Scheunemann at the opposite podium throughout the week indicates that foreign policy may have been the focus of Palin's debate cram sessions, held at John McCain's ranch in Sedona.
In his own practice debates in his home town of Wilmington, Delaware, Biden has been sparring with Michigan Gov. Jennifer Granholm.
On the Thursday flight from Arizona to Missouri, Palin's campaign tried to project an air of confidence.
"She's looking forward to it," said spokesperson Tracey Schmitt. "She is relaxed and eager to lay out the contrasts between her record of executive leadership and Joe Biden's 35 years in the halls of Congress."
Palin arrived at the airport in Arizona early Thursday morning accompanied by a host of advisers including Scheunemann and top strategist Steve Schmidt, as well as her husband Todd and children Willow, Piper and Trig.
A photographer noted that the governor was sporting a large band-aid on her right palm. The campaign said Palin had cut her hand on Monday when she suffered a fall during a jog.
On the flight to St. Louis, Piper - made famous to the nation during the Republican National Convention when she styled her baby brother's hair with her saliva - wandered back to the rear of the campaign plane to distribute licorice to reporters.