Dissecting "God Bless the U.S.A." by Lee Greenwood

Bonus episode!  For the Fourth of July, we had to turn to Lee Greenwood's towering, uber-patriotic, 1984 single, "God Bless the U.S.A."  That he's proud to be an American no one can doubt, but what richer depths might we find undergirding that sentiment upon closer examination?  And what do fireworks have to do with it?