White House Military Office responsible for the flyover, resigned. I have concluded that the controversy surrounding the Presidential Airlift Group's aerial photo shoot over New York City has made it impossible for me to effectively lead the White House Military Office, Caldera said in a letter to Obama. Moreover, it has become a distraction to the important work you are doing as president. After much reflection, I believe it is incumbent on me to tender my resignation and step down as director of the White House Military Office.