Most people who visit the Navy Memorial in Washington, D.C., see a tribute to the nation’s seagoing service, but one man sees something very different: “Vomiting is present.” Robert Royer told the Wall Street Journal that the signal flags flying at the memorial could be sending a message of men overboard, illnesses and icebergs. The signal flags at the memorial, when read as letters, spell out “U-S-N-A-V-Y-M-E-M-O-R-I-A-L.” But Royer says if the flags were flown at sea, they would be read as codes, not letters. A spokeswoman for the memorial points out in the article that the plaza and flags…