MLB finally gives Mets permission to wear NYPD, FDNY hats on anniversary of 9/11

George W. Bush part of MLB's 9/11 anniversary tribute

Mets, Yankees, MLB to Mark 9/11 20th Anniversary with On-Uniform Tributes – SportsLogos.Net News

Sept. 11 Attack 20th Anniversary: Live Updates: With Bowed Heads, Americans Reflect on 9/11 and Its Aftermath - The New York Times

New York Mets Wear NYPD Caps in Tribute to Slain Police Officer

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Major League Baseball bans New York Mets from wearing FDNY, NYPD hats honoring Sept. 11 heroes

DeGrom, in NYPD hat, backed by 10-run 4th, Mets rout Jays

Yankees–Red Sox rivalry - Wikipedia

New York Mets set to share 9/11 anniversary with fans, Yankees

Sept. 11 Attack 20th Anniversary: Live Updates: With Bowed Heads, Americans Reflect on 9/11 and Its Aftermath - The New York Times

Mets will wear special uniforms to mark 9/11 anniversary

Mets will wear special uniforms to mark 9/11 anniversary