The New York Times reports that Wisner boarded a U.S. Air Force jet on Sunday afternoon headed for Cairo. The emissary’s task: convince Mubarak to give up control of the country after 30 years in power, according to The Times. (Bloomberg has more on Wisner’s mission, noting that he met with Mubarak on Monday, before Mubarak announced he wouldn’t seek reelection in September.)

Wisner joined Patton Boggs in March 2009 from AIG, where he had served as vice chairman of external affairs for the ailing insurance giant. Wisner, 72, retired from AIG that February–he’d previously been a member of both AIG’s and Enron’s board of directors–and brought his four decades of experience as a Foreign Service officer for the U.S. State Department to Patton Boggs.