Members of the U.S. Secret Service Counter Assault Team survey a path after U.S. President Barack Obama walked through it during his tour of the ancient historic and archaeological site of Petra March 23, 2013. Obama visited Jordan's ancient city of Petra on Saturday as he wrapped up a four-day Middle East tour by setting aside weighty diplomatic matters and playing tourist for a day. REUTERS/Muhammad Hamed (JORDAN - Tags: POLITICS TRAVEL MILITARY) less