Obama gave his 2008 victory speech from Millennial Park in Chicago. Notice the snake like entrance leaving the "egg". Obama appears to be king 6 of Revelation 17 , to be succeeded by Trump (king 7) who was 70 years, 7 months and 7 days old at his swearing in date (confirming his "7") and who in his inauguration speech also specifically named  all 6 living former presidents , starting with President Carter. Listen to Trump's listing of presidents in my other post. It is a perfect match with Rev 17:10-11